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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

For the fiscal year ended December 31, 2007

OR

For the transition period from                      to                     

Commission file number 000-31293

EQUINIX, INC.

(Exact name of registrant as specified in its charter)

301 Velocity Way, Fifth Floor, Foster City, California 94404

(Address of principal executive offices, including ZIP code)

(650) 513-7000

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the registrant is a well-known seasoned issuer as defined in Rule 405 of the Act.    x  Yes    ¨  No

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    ¨  Yes    x  No

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    x  Yes    ¨  No

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    ¨  Yes    x  No

The aggregate market value of the voting and non-voting common stock held by non-affiliates computed by reference to the price at which the common stock was last sold as of the last business day of the registrant’s most recently completed second fiscal quarter was approximately $2.5 billion.

As of January 31, 2008, a total of 36,646,255 shares of the registrant’s common stock were outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Part III—Portions of the registrant’s definitive Proxy Statement to be issued in conjunction with the registrant’s 2008 Annual Meeting of Stockholders, which is expected to be filed not later than 120 days after the registrant’s fiscal year ended December 31, 2007. Except as expressly incorporated by reference, the registrant’s Proxy Statement shall not be deemed to be a part of this report on Form 10-K.

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EQUINIX, INC.

FORM 10-K

DECEMBER 31, 2007

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PART I

The words “Equinix”, “we”, “our”, “ours”, “us” and the “Company” refer to Equinix, Inc. All statements in this discussion that are not historical are forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, including statements regarding Equinix’s “expectations”, “beliefs”, “hopes”, “intentions”, “strategies” or the like. Such statements are based on management’s current expectations and are subject to a number of factors and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. Equinix cautions investors that there can be no assurance that actual results or business conditions will not differ materially from those projected or suggested in such forward-looking statements as a result of various factors, including, but not limited to, the risk factors discussed in this Annual Report on Form 10-K. Equinix expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in Equinix’s expectations with regard thereto or any change in events, conditions, or circumstances on which any such statements are based.

Overview

Equinix provides network neutral colocation, interconnection and managed services to enterprises, content companies, systems integrators and the world’s largest network providers. Through our Internet Business Exchange hubs, or IBX hubs, in 18 markets in the U.S., Asia-Pacific and Europe, customers can directly interconnect with each other for critical traffic exchange requirements. Direct interconnection to our aggregation of networks, which serve more than 90% of the world’s Internet routes, enables our customers to increase performance while significantly reducing costs. Based on our network neutral model and the quality of our IBX hubs, we believe we have established a critical mass of customers. This critical mass and the resulting “network effect,” combined with a strong financial position, continue to drive new customer growth and bookings. In addition to our business momentum, increases in overall customer demand combined with a supply and demand imbalance in the data center market has resulted in market growth and a favorable pricing environment for us. As a result of our largely fixed cost model, any growth in revenue would likely drive incremental margins and increased operating cash flow; however, the costs of a new IBX center that we open initially has a negative effect on earnings until a new IBX center generates sufficient revenues to cover these costs.

Our network neutral business model is a key differentiator for us in the market. Because we do not operate a network, we are able to offer our customers direct interconnection to the largest aggregation of bandwidth providers and Internet service providers. The world’s top tier Internet service providers, numerous access networks, second tier providers and international carriers such as AOL, at&t, British Telecom, Cable & Wireless, Comcast, Level 3, NTT, Qwest, SingTel, Sprint and Verizon Business are all currently located at our IBX hubs. Access to such a wide variety of networks has attracted nine of the top 10 Internet properties and numerous other enterprise and government customers, including Amazon.com, Bank of America, Electronic Arts, Fox Interactive Media, Gannett, The Gap, Goldman Sachs, Google, IBM, McGraw Hill, MSN, NASA, News Corporation, Salesforce.com, Sony and Yahoo!.

Our services are primarily comprised of colocation, interconnection, and managed IT infrastructure services.

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The market for our services has historically been served by large telecommunications carriers who have bundled their telecommunications services and managed services with their colocation offerings. Over the past several years, a number of these telecommunications carriers have eliminated or reduced their colocation footprint to focus on their core businesses. Additionally, many of the competitive providers have failed to scale their businesses and have been forced to exit the market. Although some of our customers, including companies such as AOL, Google or MSN, operate or are building their own data centers for their large infrastructure deployments, these customers continue to have a presence in an Equinix data center to use our interconnection services to reach their business partners. The need for large, wholesale outsourced data centers is also, more recently, being addressed by real estate investment trusts (REITs) who are building large centers to meet customers’ needs for large or standalone centers, a different customer segment than Equinix serves. However, with the exit of the telecommunications players and a limited amount of new supply resulting from either legacy centers being unable to address the power needs of today’s customers or a lack of new data centers, there now exists a supply and demand imbalance to address our target customer’s needs. This supply and demand imbalance in the industry has created a favorable pricing environment for us and increased the demand for our centers because we have gained many of those customers displaced from these companies as access to their networks is also available in our IBX hubs. Strategically, we will continue to look at attractive opportunities to grow our market share and selectively improve our footprint and service offerings.

Recent Developments

During 2007, we obtained a loan to finance our Chicago metro area IBX expansion project; entered into long-term leases for new space in Hong Kong, Paris and Singapore; extended an offer of employment to Steve M. Smith as our Chief Executive Officer and President; issued $250.0 million 2.50% convertible subordinated notes; purchased a property located in El Segundo, California; purchased a property and an adjacent piece of land in Silicon Valley, California; obtained a loan for expansion plans in Singapore and Tokyo; completed the acquisition of IXEurope plc based in London, U.K.; closed an offering of our common stock and issued $396.0 million 3.00% convertible subordinated notes to primarily finance the acquisition of IXEurope; amended certain provisions of our Silicon Valley Bank revolving credit line and sold our EMS service offering in Singapore. During 2008, we entered into a long-term lease for new space in Sydney, Australia, obtained a loan for expansion plans there and completed the acquisition of Virtu Secure Webservices B.V. based in the Netherlands. For further information on our recent developments, refer to our discussion of “Recent Developments” in our “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Item 7 of this Annual Report on Form 10-K below.

Industry Background

The Internet is a collection of numerous independent networks interconnected with each other to form a network of networks. Users on different networks are able to communicate with each other through interconnection between these networks. For example, when a user of the Internet sends an email to another user, assuming that each person uses a different network provider, the email must pass from one network to the other in order to get to the final destination.

In order to accommodate the rapid growth of Internet traffic, an organized approach for network interconnection was needed. The exchange of traffic between these networks became known as peering. Peering is when networks trade traffic at relatively equal amounts and set up agreements to trade traffic often at no charge to the other party. At first, government and non-profit organizations established places where these networks could exchange traffic, or peer, with each other—these points were known as network access points, or NAPs. Over time, many NAPs became a natural extension of carrier services and were run by such companies as MFS (now a part of Verizon Business), Sprint, Ameritech and Pacific Bell (both now known as at&t).

Ultimately, these NAPs were unable to scale with the growth of the Internet and the lack of “neutrality” by the carrier owners of these NAPs created a conflict of interest with the participants. This created a market need

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for network neutral interconnection points that could accommodate the rapidly growing need to increase performance for enterprise and consumer users of the Internet, especially with the rise of important content providers such as AOL, Google, Microsoft, Yahoo! and others. In addition the providers, as well as a growing number of enterprises, required a more secure and reliable solution for direct connection to a variety of telecommunications networks as the importance of their Internet operations continued to grow.

To accommodate Internet traffic growth, the largest of these networks left the NAPs and began trading traffic by placing private circuits between each other. Peering, which once occurred at the NAP locations, was moved to these private circuits. Over the years, these circuits became expensive to expand and could not be built fast enough to accommodate the growth in traffic. This led to a need by the large carriers to find a more efficient way to exchange network traffic or peer. Customers have chosen Equinix for peering because they are now able to reach all of the networks with which they peer within one location using simple direct connections. Their ability to peer across the room, instead of across a metro area, has increased the scalability of their operations while decreasing costs for some customers by upwards of 70%.

Our Solution

Our IBX centers provide the environment and services to meet the networking and IT operations challenges facing enterprises, networks and Internet businesses today. As a result, we are able to provide the following key benefits to our customers:

Quality. Our IBX centers provide customers with a secure, high quality solution for their colocation needs. Enterprise and content companies have demanding requirements for data center uptime, security, power backup and other important attributes. We have designed our IBX centers and processes to exceed the requirements for the most important financial institutions, government agencies and key enterprise brands such as Adobe, Amazon.com, The Gap, Goldman Sachs, News Corporation, Sony and Ticketmaster. While we historically have a track record of 99.999% uptime, including our recently-acquired European operations, we continually test and refine our operating processes to ensure that we will continue to provide high levels of stability and quality.

Performance. Because we provide direct access to the providers that serve more than 90% of the world’s Internet routes, customers can quickly, efficiently, cost-effectively and reliably exchange traffic with their network services providers for higher performance operations. The ability to connect directly to the more than 300 networks enables high-quality direct interconnection. With the mass of networks present, global enterprises are increasingly looking at ways to provide network diversity and increase performance of their operations, and are utilizing our IBX centers to ensure their IT infrastructures are operating at the interconnection hub of the Internet. By using multiple networks, customers are able to build redundancy into their operations in the event that one of their network service providers has a service interruption or restructuring in their business. The network service providers and geographic diversity we offer provides customers with the flexibility to enable the highest performing Internet operations.

Improved Economics. Our services, such as Equinix Exchange and Equinix Internet Core Exchange, facilitate peering and dramatically reduce costs for critical transit, peering and traffic exchange operations by eliminating the costs of private peering or local loops. Networks such as at&t, British Telecom, Cox Communications and Japan Telcom and content providers such as Electronic Arts, Google, MSN and Yahoo! can save between 20% and 70% of bandwidth costs through the traffic exchange services we offer. Although some of the larger content providers also own and operate their own large data centers, they continue to use Equinix to exchange their network traffic. In addition, content companies and enterprises can save significant bandwidth costs because the number of networks housed within Equinix competing for the traffic of these companies results in lower prices while providing increased performance.

Additionally, many enterprises today operate their own data centers for their IT infrastructure. Due to the increasing power intensity of today’s hardware, and limited space availability within their existing data centers,

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many enterprises have been building new data centers for their internal needs. These new builds can be capital intensive, and as a result, some enterprises have begun to pursue outsourcing this additional space requirement to colocation providers to achieve capital expenditure and operational savings.

Access to International Markets. We offer our network, content and enterprise customers a one-stop solution for their outsourced colocation and interconnection needs in the U.S., Asia-Pacific and Europe. We strive to offer a consistent standard of quality and support for all our locations throughout the U.S., Asia-Pacific and Europe.

Our IBX centers are the next-generation interconnection points. They are designed to handle the scalability issues that exist between both large and small networks, as well as the interconnection between companies who have become critical to the Internet. We have been successful in uniting the major companies that make up the Internet infrastructure including at&t, Level 3, Qwest, SAVVIS, Sprint and Verizon Business. These companies, which constitute the world’s top Internet service providers, together with most of the major broadband networks, including AOL, Comcast, Cox Communications and MSN, second tier backbones such as Earthlink, Global Crossing and Verio, top international telecommunications carriers, including Bell Canada, British Telecom, Deutsche Telecom, France Telecom, Japan Telecom, KDDI, SingTel, StarHub, Telia and Telstra, a number of fiber, sonet, ethernet and competitive local exchange companies, including OnFiber Communications (now owned by Qwest) and Yipes, and incumbent local exchange companies, including at&t, Qwest and Verizon, are our customers and use us to interconnect with each other and their customers. Additionally, we provide an important industry leadership role in the area of exchange points and are consistently looked to as an industry expert and key influencer on this subject matter.

Content providers and enterprises can now control their own network performance by economically reaching the various service providers they wish to work with by establishing direct connections for this connectivity. For our customers, this represents significant cost savings and increased flexibility to move among providers.

Our Strategy

Our objective is to become the premier hub for critical Internet properties, enterprises, content providers and government agencies to locate their information technology infrastructure operations in order to gain maximum benefits from the choice of networks and partners in the most simple and efficient manner. Key components of our strategy include the following:

Continue to Build upon our Critical Mass of Network Providers and Content Companies and Grow our Position within Enterprise and Government. We have assembled a critical mass of premier network providers and content companies and have become one of the core hubs of the Internet. This critical mass is a key selling point since content companies want to connect with a diverse set of networks to provide the best connectivity to their end-customers and network companies want to sell bandwidth to content customers and interconnect with other networks in the most efficient manner available. Currently, we service over 300 unique networks, including all of the top tier networks, allowing our customers to directly interconnect with providers that serve more than 90% of global Internet routes. We have a growing mass of key players in the enterprise sector, such as Bank of America, The Gap, Gannett, Goldman Sachs, IBM, Salesforce.com, Sony and others. Similarly, we have experienced increasing success in attracting customers from the government sector, such as NASA. We expect the success we have experienced in the enterprise, financial and digital media segments to continue to drive our growth in 2008 and beyond.

Leverage the Network Effect. As networks, content providers and other enterprises locate in our IBX centers; it benefits their suppliers and business partners to do so as well to gain the full economic and performance benefits of direct interconnection. These partners, in turn, pull in their business partners, creating a “network effect” of customer adoption. Our interconnection services enable scalable, reliable and cost-effective interconnection and traffic exchange thus lowering overall cost and increasing flexibility. The ability to directly interconnect with a wide variety of companies is a key differentiator for us in the market.

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Promote our IBX Centers as the Highest Performance Points on the Internet. Data center reliability, power availability and network choice are the most important attributes when our customers are choosing a data center provider. Our premier IBX hubs are next-generation data centers and offer customers advanced security, reliability and redundancy. Our security design in the U.S. IBX centers includes five levels of biometrics security to access customer cages. Our power infrastructure includes N+1 redundancy for all systems and has delivered 99.999% uptime over the period from January 1, 2002 through December 31, 2007. We provide access to over 300 different network providers. Our support staff, trained to aid customers with operational support, is available 24 hours a day, 365 days a year.

Provide New Products and Services within our IBX Centers. We plan to continue to offer additional products and services that are most valuable to our customers as they manage their Internet and network businesses and, specifically, as they attempt to effectively utilize multiple networks. Examples include our IBX Link services, which allow customers to easily move traffic between IBX centers located in the same metro area, or the Financial Exchange service, which allows direct interconnection with electronic financial exchanges, such as the Chicago Mercantile Exchange, in markets such as Chicago, Frankfurt, London and Paris.

Ensure Continuous Growth for our Customers. We plan to expand in key markets based on customer demand to ensure a smooth growth path for our customers. For example, we have acquired more than six new IBX centers in our key markets over the last five years and recently opened four additional new IBX centers or IBX center expansions in the U.S., Tokyo, Japan and Singapore markets. We expect to open new IBXs, or expansions within existing ones, in nine of our 18 markets in 2008. These efforts, and excluding the capacity added from our recent acquisition of IXEurope, will result in almost doubling our sellable cabinet capacity since 2003.

Our strategy is to continue to grow in select existing markets and possibly expand to additional markets where demand and financial return potential warrant. We expect to execute this expansion strategy in a cost-effective and prudent manner through a combination of acquiring existing centers through lease or purchase, or building new centers based on key criteria, such as demand and potential financial return, in each market.

Our Customers

Our customers include carriers and other bandwidth providers, Internet service providers, enterprises, content providers and system integrators. We offer each customer a choice of business partners and solutions based on their colocation, interconnection and managed IT service needs. As of December 31, 2007, we had 1,881 customers worldwide.

Typical customers in each category include the following:

Customers typically sign renewable contracts of one or more years in length. Our single largest customer, IBM, represented approximately 6%, 9%, and 11% of total revenues for the years ended December 31, 2007, 2006 and 2005, respectively. No other single customer accounted for more than 5% of revenues during this time.

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Our Services

Our services are primarily comprised of colocation, interconnection and managed IT infrastructure services.

Colocation Services

Our IBX centers provide our customers with secure, reliable and fault-tolerant environments that are necessary for optimum Internet commerce interconnection. Our IBX centers include multiple layers of physical security, scalable cabinet space availability, on-site trained staff 24 hours per day, 365 days a year, dedicated areas for customer care and equipment staging, redundant AC/DC power systems and multiple other redundant and fault-tolerant infrastructure systems. Some specifications or services provided may differ in our Asia-Pacific and European locations in order to properly meet the local needs of customers.

Within our IBX centers, customers can place their equipment and interconnect with a choice of networks or other business partners. We also provide customized solutions for customers looking to package our IBX services as part of their complex solutions. Our colocation products and services include:

Cabinets. Our customers have several choices for colocating their networking and server equipment. They can place the equipment in one of our shared or private cages or customize their space. In Europe, customers can purchase their own private “suite” which is walled off from the rest of the data center. As a customer’s colocation requirements increase, they can expand within their original cage (or suite) or upgrade into a cage that meets their expanded requirements. Customers buy the hardware they place in our IBX centers directly from their chosen vendors. Cabinets are priced with an initial installation fee and an ongoing recurring monthly charge.

Power. Power is an element of increasing importance in customers’ colocation decisions. We offer both AC and DC power circuits at various amperages and phases customized to a customer’s individual power requirements. Power is priced with an initial installation fee and an ongoing recurring monthly charge.

IBXflex. IBXflex allows customers to deploy mission-critical operations personnel and equipment on-site at our IBX centers. Because of the close proximity to their end-users, IBXflex customers can offer a faster response and quicker troubleshooting solution than those available in traditional colocation facilities. This space can also be used as a secure disaster recovery point for customers’ business and operations personnel. This service is priced with an initial installation fee and an ongoing recurring monthly charge.

Interconnection Services

Our interconnection services enable scalable, reliable and cost-effective interconnection and traffic exchange between all Equinix customers. These interconnection services are either on a one-to-one basis with direct cross connects or one-to-many through one of our peering services. In peering, we provide an important industry leadership role by acting as the relationship broker between parties who would like to interconnect within our IBX centers. Our staff holds significant positions in the leading industry groups such as the North American Network Operators’ Group, or NANOG, and the Internet Engineering Task Force, or IETF, and brings a tremendous amount of knowledge to this area. Our staffs have published industry-recognized white papers and strategy documents in the areas of peering and interconnection, many of which are used by leading institutions worldwide in furthering the education and promotion of this important network arena. To showcase these efforts, we hold peering forums which are now widely recognized as very influential forums for the world’s top peering experts. We will continue to develop additional services in the area of traffic exchange that will allow our customers to leverage the critical mass of networks now available in our IBX centers. Our current exchange services are comprised of the following:

Physical Cross-Connect/Direct Interconnections. Customers needing to directly and privately connect to another IBX customer can do so through single or multi-mode fiber. These cross connections are the physical link between customers and can be implemented within 24 hours of request. Cross-connect services are priced with an initial installation fee and an ongoing monthly recurring charge.

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Equinix Internet Core Exchange. This interconnection service enables direct peering interconnections between major IP backbone networks. Equinix Internet Core Exchange is a pre-provisioned interconnection package that enables major backbones to connect their networks directly in a centralized, neutral environment for peering and transit. The service includes pre-provisioned interconnections, premium service levels and specialized customer service features to support the quality and support levels required by the largest Internet providers in the world. Internet Core Exchange services are priced with an initial installation fee and an ongoing monthly recurring charge.

Equinix Exchange. Customers may choose to peer through and connect to our Equinix Exchange via a central switching fabric rather than purchase a direct physical cross connection. With a connection to this switch, a customer can aggregate multiple interconnects over one physical connection with up to 10 gigabits of capacity instead of purchasing individual physical cross connects. The Exchange service is offered as a bundled service that includes a cabinet, power, cross connects and port charges. The service is priced by IBX with an initial installation fee and an ongoing monthly recurring charge. Individual IBX prices increase as the number of participants on the exchange service grows. We intend to add additional sites for the Equinix Exchange service to Europe in the coming months as we try to further develop the market for interconnection and peering in that market.

Equinix IBXLink. Customers who are located in one IBX may need to interconnect with networks or other customers located in an adjacent IBX in the same metro area. IBXLink allows customers to seamlessly interconnect between IBXs at capacities up to an OC-192, or 10 gigabits per second level. IBXLink services are priced with an initial installation fee and an ongoing monthly recurring charge dependent on the capacity the customer purchases.

Internet Connectivity Services. Customers who are installing equipment in our IBX centers generally require IP connectivity or bandwidth services. Although many large customers prefer to contract directly with carriers, we offer customers the ability to contract for these services through us from any of the major bandwidth providers. This service, which is provided in Asia, is targeted to customers who require a single bill and a single point of support for their entire services contract through Equinix for their bandwidth needs. Internet Connectivity Services are priced with an initial installation fee and an ongoing monthly recurring charge based on the amount of bandwidth committed.

Managed IT Infrastructure Services

With the continued growth in Internet use, networks, service providers, enterprises and content providers are challenged to deliver fast and reliable service, while lowering costs. With over 300 ISPs and carriers located in our IBX centers, we leverage the value of network choice with our set of multi-network management and other outsourced IT services.

Professional Services. Our IBX centers are staffed with Internet and telecommunications specialists who are on-site and available 24 hours a day, 365 days a year. These professionals are trained to perform installations of customer equipment and cabling. Professional services are custom-priced depending on customer requirements.

“Smart Hands” Services. Our customers can take advantage of our professional “Smart Hands” service, which gives customers access to our IBX staff for a variety of tasks, when their own staff is not on site. These tasks may include equipment rebooting, power cycling, card swapping and performing emergency equipment replacement. Services are available on-demand or by customer contract and are priced on an hourly basis.

Equinix Direct. Equinix Direct is a managed multi-homing service that allows customers to easily provision and manage multiple network connections over a single interface. Customers can choose branded networks on a monthly basis with no minimums or long-term commitments. This service is priced with an initial installation fee and ongoing monthly recurring charges, dependent on the bandwidth used by the customer.

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Equinix Command Center. Equinix Command Center, available only in Asia-Pacific, is a suite of managed services for the management and monitoring of enterprise-level information systems and network infrastructure. The suite of services allows customers to achieve greater efficiency from their IT infrastructure while reducing the cost and complexity of administering and managing these functions internally. The services are priced with an initial installation fee and ongoing monthly recurring charges based on customer activity.

Sales and Marketing

Sales. We use a direct sales force and channel marketing program to market our services to network, content provider, enterprise, government and Internet infrastructure businesses. We organize our sales force by customer type as well as by establishing a sales presence in diverse geographic regions, which enables efficient servicing of the customer base from a network of regional offices. In addition to our worldwide headquarters located in Silicon Valley, we have established an Asia-Pacific regional headquarters in Hong Kong, and a European regional headquarters in London, U.K. Our U.S. sales offices are located in Boston; Chicago; Los Angeles; New York; Reston, Virginia and Silicon Valley. Our Asia-Pacific sales offices are located in Hong Kong, Singapore, Sydney and Tokyo. Our European sales offices are located in Frankfurt, London, Paris and Zurich.

Our sales team works closely with each customer to foster the natural network effect of our IBX model, resulting in access to a wider potential customer base via our existing customers. As a result of the IBX interconnection model, IBX center participants encourage their customers, suppliers and business partners to also locate in our IBX centers. These customers, suppliers and business partners, in turn, encourage their business partners to locate in our IBX centers resulting in additional customer growth. This network effect significantly reduces our new customer acquisition costs. In addition, large network providers or managed service providers may refer customers to Equinix as a part of their total customer solution.

Marketing. To support our sales effort and to actively promote our brand in the U.S., Asia-Pacific and Europe, we conduct comprehensive marketing programs. Our marketing strategies include an active public relations campaign and on-going customer communications programs. Our marketing efforts are focused on major business and trade publications, online media outlets, industry events and sponsored activities. Our staff holds leadership positions in key networking organizations and we participate in a variety of Internet, computer and financial industry conferences, placing our officers and employees in keynote speaking engagements at these conferences. We also regularly measure customer satisfaction levels and host key customer forums to ensure customer needs are understood and incorporated in product and service planning efforts. From a brand perspective, we build recognition through sponsoring or leading industry technical forums and participating in Internet industry standard-setting bodies. We continue to develop and host the industry’s most successful educational forums focused on peering technologies and practices for ISPs and content providers.

Our Competition

Our current and potential competition includes:

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Unlike other providers whose core businesses are bandwidth or managed services, we focus on neutral interconnection hubs for networks, content providers, enterprises and government. As a result, we are free of the channel conflict common at other hosting/colocation companies. We compete based on the quality of our IBX centers, our ability to provide a one-stop solution in our U.S., Asia-Pacific and European locations, the superior performance and diversity of our network neutral strategy and the economic benefits of the aggregation of top networks and Internet businesses under one roof. Specifically, we have established relationships with a number of leading hosting companies such as IBM (our largest customer) and others. We expect to continue to benefit from several industry trends including the consolidation of supply in the colocation market, the need for contracting with multiple networks due to the uncertainty in the telecommunications market, customers’ increasing power requirements, enterprise customers’ growth in outsourcing and the continued growth of broadband.

Our Business Segment Financial Information

We currently operate in one reportable segment, but have determined that we operate in three distinct geographic regions, comprised of the U.S., Asia-Pacific and Europe. Information attributable to each of our geographic regions is set forth in Note 14 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.

Employees

As of December 31, 2007, we had 911 employees. We had 546 employees based in the U.S., 187 employees based in Asia-Pacific and 178 employees based in Europe. Of those employees, 412 were in engineering and operations, 140 were in sales and marketing and 359 were in management, finance and administration.

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Available Information

We were incorporated in Delaware in June 1998. We are required to file reports under the Securities Exchange Act of 1934, as amended, with the Securities Exchange Commission. You may read and copy our materials on file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549. You may obtain information regarding the SEC’s Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC also maintains an Internet website at http://www.sec.gov that contains reports, proxy and information statements and other information.

You may also obtain copies of our annual report on Form 10-K, our quarterly reports on Form 10-Q and our current reports on Form 8-K, and any amendments to such reports, free of charge by visiting the investor relations page on our website, www.equinix.com. These reports are available as soon as reasonably practical after we file them with the SEC. Information contained on our website is not part of this annual report on Form 10-K.

In addition to the other information contained in this report, the following risk factors should be considered carefully in evaluating our business and us:

Risks Related to Our Business

We may not be able to successfully integrate IXEurope and achieve the benefits we expect from the IXEurope acquisition.

We will only achieve the benefits that are expected to result from the IXEurope acquisition if we can successfully integrate its administrative, finance, operations, sales and marketing organizations, and implement appropriate systems and controls.

The success of the IXEurope acquisition and integration into our operations will involve a number of risks, including:

If we fail to integrate IXEurope successfully and/or fail to realize the intended benefits of the IXEurope acquisition, our results of operations could be materially and adversely affected. In addition, the IXEurope

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acquisition resulted in a substantial goodwill asset, which will be subject to an annual impairment analysis. If this goodwill were to be impaired in the future, it could have a significant negative impact on our results of operations and financial condition.

Our substantial debt could adversely affect our cash flows and limit our flexibility to raise additional capital.

We have a significant amount of debt. As of December 31, 2007, our total indebtedness was approximately $1.1 billion and our stockholders’ equity was $814.4 million.

Our substantial amount of debt could have important consequences. For example, it could:

The occurrence of any of the foregoing factors could have a material adverse effect on our business, results of operations and financial condition. In addition, the performance of our stock price may trigger events that would require the write-off of a significant portion of our debt issuance costs related to our convertible debt, which may have a material adverse effect on our results of operations and financial condition.

We have incurred substantial losses in the past and may continue to incur additional losses in the future.

Although we have generated cash from operations since the quarter ended September 30, 2003, for the years ended December 31, 2007, 2006 and 2005, we incurred net losses of $5.2 million, $6.4 million and $42.6 million, respectively. Although we believe we are approaching a position of having our net losses decrease to a breakeven level or possibly producing some nominal level of net income in the foreseeable future, we are also currently investing heavily in our future growth through the build-out of several additional IBX centers and IBX center expansions. As a result, we will incur higher depreciation and other operating expenses that will negatively impact our ability to achieve and sustain profitability unless and until these new IBX centers generate enough revenue to exceed their operating costs and cover our additional overhead needed to scale our business for this anticipated growth. In addition, costs associated with the IXEurope acquisition and the integration of the two companies, as well as the additional interest expense associated with debt financing we have undertaken to fund our growth initiatives, may also negatively impact our ability to achieve and sustain profitability. Although our goal is to achieve profitability, there can be no guarantee that we will become profitable, and we may continue to incur additional losses. Even if we achieve profitability, given the competitive and evolving nature of the industry in which we operate, we may not be able to sustain or increase profitability on a quarterly or annual basis.

We are continuing to invest in our expansion efforts but may not have sufficient customer demand in the future to realize expected returns on these investments.

We are considering the acquisition or lease of additional properties, including construction of new IBX centers beyond those expansion projects already announced. We will be required to commit substantial

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operational and financial resources to these IBX centers, generally 12–18 months in advance of securing customer contracts, and we may not have sufficient customer demand in those markets to support these centers once they are built. In addition, unanticipated technological changes could affect customer requirements for data centers and we may not have built such requirements into our new IBX centers. Any of these contingencies, if they were to occur, could make it difficult for us to realize expected or reasonable returns on these investments.

Our construction of additional new IBX centers could involve significant risks to our business.

In order to sustain our growth in certain of our existing and new markets, we must acquire suitable land with or without structures to build new IBX centers from the ground up, a “greenfield build.” Greenfield builds are currently underway, or being contemplated, in several key markets. A greenfield build involves substantial planning and lead-time, much longer time to completion than an IBX retrofit of an existing data center, and significantly higher costs of construction, equipment and materials, which could have a negative impact on our returns. A greenfield build also requires us to carefully select and rely on the experience of one or more general contractors and associated subcontractors during the construction process. Should a general contractor or significant subcontractor experience financial or other problems during the construction process, we could experience significant delays, increased costs to complete the project and other negative impacts to our expected returns. Site selection is also a critical factor in our expansion plans, and there may not be suitable properties available in our markets with the necessary combination of high power capacity and fiber connectivity.

While we may prefer to locate new IBX centers adjacent to our existing locations, we may be limited by the inventory and location of suitable properties as well as the need for adequate power and fiber to the site. In the event we decide to build new IBX centers separate from our existing IBX centers, we may provide services to interconnect these two centers. Should these services not provide the necessary reliability to sustain service, this could result in lower interconnection revenue, lower margins and could have a negative impact on customer retention over time.

If we are not able to generate sufficient operating cash flows or obtain external financing, our ability to fund capital expenditures or fulfill our obligations or execute expansion plans may be limited.

Our capital expenditures, together with ongoing operating expenses and obligations to service our debts, will be a substantial drain on our cash flow and may decrease our cash balances. We regularly assess the capital markets for external financing opportunities, including debt and equity. Additional debt or equity financing may not be available when needed or, if available, may not be available on satisfactory terms. Our inability to obtain needed debt and/or equity financing or to generate sufficient cash from operations may require us to abandon projects or curtail capital expenditures. If we curtail capital expenditures or abandon projects, we could be materially adversely affected.

Any failure of our physical infrastructure or services could lead to significant costs and disruptions that could reduce our revenue and harm our business reputation and financial results.

Our business depends on providing customers with highly reliable service. We must protect our customers’ IBX infrastructure and their equipment located in our IBX centers. We continue to acquire IBX centers not built by us. If we discover that these IBX centers and their infrastructure assets are not in the condition we expected when they were purchased, we may be required to incur substantial additional costs to repair or upgrade the centers. The services we provide in each of our IBX centers are subject to failure resulting from numerous factors, including:

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Problems at one or more of our IBX centers, whether or not within our control, could result in service interruptions or significant equipment damage. We have service level commitment obligations to certain of our customers, including our significant customers. As a result, service interruptions or significant equipment damage in our IBX centers could result in difficulty maintaining service level commitments to these customers and potential claims related to such failures.

If we incur significant financial obligations to our customers in connection with a loss of power, or our failure to meet other service level commitment obligations, our liability insurance may not be adequate. In addition, any loss of service, equipment damage or inability to meet our service level commitment obligations could reduce the confidence of our customers and could consequently impair our ability to obtain and retain customers, which would adversely affect both our ability to generate revenues and our operating results.

Furthermore, we are dependent upon Internet service providers, telecommunications carriers and other website operators in the U.S., Asia, Europe and elsewhere, some of which have experienced significant system failures and electrical outages in the past. Users of our services may in the future experience difficulties due to system failures unrelated to our systems and services. If for any reason, these providers fail to provide the required services, our business, financial condition and results of operations could be materially adversely impacted.

We expect our operating results to fluctuate.

We have experienced fluctuations in our results of operations on a quarterly and annual basis. The fluctuations in our operating results may cause the market price of our common stock to decline. We expect to experience significant fluctuations in our operating results in the foreseeable future due to a variety of factors, including, but not limited to:

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Any of the foregoing factors, or other factors discussed elsewhere in this report, could have a material adverse effect on our business, results of operations and financial condition. Although we have experienced growth in revenues in recent quarters, this growth rate is not necessarily indicative of future operating results. We have generated net losses every fiscal year since inception. It is possible that we may not be able to generate positive net income on a quarterly or annual basis in the future. In addition, a relatively large portion of our expenses are fixed in the short-term, particularly with respect to lease and personnel expenses, depreciation and amortization and interest expenses. Therefore, our results of operations are particularly sensitive to fluctuations in revenues. As such, comparisons to prior reporting periods should not be relied upon as indications of our future performance. In addition, our operating results in one or more future quarters may fail to meet the expectations of securities analysts or investors. If this occurs, we could experience an immediate and significant decline in the trading price of our stock.

Our inability to use our tax net operating losses will cause us to pay taxes at an earlier date and in greater amounts, which may harm our operating results.

We believe that our ability to use our pre-2003 tax net operating losses, or NOLs, in any taxable year is subject to limitations under Section 382 of the United States Internal Revenue Code of 1986, as amended, or the Code, as a result of the significant change in the ownership of our stock that resulted from our combination with i-STT Pte Ltd and Pihana Pacific, Inc. in 2002. We expect that a significant portion of our NOLs that accrued prior to December 31, 2002 will expire unused as a result of this limitation. In addition to the limitations on NOL carry-forward utilization described above, we believe that Section 382 of the Code will also significantly limit our ability to use the depreciation and amortization on our assets, as well as certain losses on the sale of our assets, to the extent that such depreciation, amortization and losses reflect unrealized depreciation that was inherent in such assets as of the date of the combination. These limitations will cause us to pay taxes at an earlier date and in greater amounts than would occur absent such limitations.

We are exposed to potential risks from legislation requiring companies to evaluate controls under Section 404 of the Sarbanes-Oxley Act of 2002.

Although we received an unqualified opinion regarding the effectiveness of our internal controls over financial reporting as of December 31, 2007, in the course of our ongoing evaluation of our internal controls over financial reporting we have identified certain areas which we would like to improve and are in the process of evaluating and designing enhanced processes and controls to address these areas identified during our evaluation, none of which we believe constitutes or will constitute a material change. However, we cannot be certain that our efforts will be effective or sufficient for us, or our independent registered public accounting firm, to issue unqualified reports in the future, especially as our business continues to grow and evolve.

IXEurope, since it was acquired in September 2007, was scoped out of internal control testing for 2007; however, it will be in scope for 2008. It may be difficult to design and implement effective financial controls for

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combined operations, and differences in existing controls of any acquired businesses, including IXEurope, may result in weaknesses that require remediation when the financial controls and reporting are combined.

Our ability to manage our operations and growth will require us to improve our operational, financial and management controls, as well as our internal reporting systems and controls. We may not be able to implement improvements to our internal reporting systems and controls in an efficient and timely manner and may discover deficiencies in existing systems and controls.

If we cannot effectively manage our international operations and successfully implement our international expansion plans, our revenues may not increase and our business and results of operations would be harmed.

For the years ended December 31, 2007, 2006 and 2005, we recognized 23%, 14% and 13%, respectively, of our revenues outside the U.S. As a result of the IXEurope and Virtu acquisitions, revenues outside of the U.S. will increase further in 2008.

To date, the neutrality of our IBX centers and the variety of networks available to our customers has often been a competitive advantage for us. In certain of our acquired IBX centers the limited number of carriers available reduces that advantage. As a result, we may need to adapt our key revenue-generating services and pricing to be competitive in that market.

We may experience gains and losses resulting from fluctuations in foreign currency exchange rates. To date, the majority of our revenues and costs have been denominated in U.S. dollars; however, the majority of revenues and costs in our international operations have been denominated in foreign currencies. Although we have in the past and may decide to undertake foreign exchange hedging transactions in the future to reduce foreign currency transaction exposure, we do not currently intend to eliminate all foreign currency transaction exposure. Where our prices are denominated in U.S. dollars, our sales could be adversely affected by declines in foreign currencies relative to the U.S. dollar, thereby making our products and services more expensive in local currencies.

We are currently undergoing expansions or evaluating expansion opportunities in Europe and in the Asia-Pacific region. Undertaking and managing expansions in foreign jurisdictions may present unanticipated challenges to us. In addition, any expansion requires substantial operational and financial resources, and we may not have sufficient customer demand to support the expansion once complete. Unanticipated technological changes could also affect customer requirements for data centers and we may not have built such requirements into our expanded IBX centers. We are also exposed to risks resulting from fluctuations in foreign currency exchange rates in connection with our international expansions. To the extent we are paying contractors in foreign currencies, our expansions could cost more than anticipated from declines in the U.S dollar relative to foreign currencies.

Our international operations are generally subject to a number of additional risks, including:

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The increased use of high power density equipment may limit our ability to fully utilize our IBX centers.

Customers are increasing their use of high-density electrical power equipment, such as blade servers, in our IBX centers which has significantly increased the demand for power on a per cabinet basis. Because most of our centers were built several years ago, the current demand for electrical power may exceed the designed electrical capacity in these centers. As electrical power, not space, is typically the limiting factor in our IBX data centers, our ability to fully utilize those IBX centers may be limited. The availability of sufficient power may also pose a risk to the successful operation of our new IBX centers. The ability to increase the power capacity of an IBX, should we decide to, is dependent on several factors including, but not limited to, the local utility’s ability to provide additional power; the length of time required to provide such power; and/or whether it is feasible to upgrade the electrical infrastructure of an IBX to deliver additional power to customers. Although we are currently designing and building to a much higher power specification, there is a risk that demand will continue to increase and our IBX centers could become obsolete sooner than expected.

We have made, and may continue to make, acquisitions which pose integration and other risks that could harm our business.

We have recently acquired several new IBX centers, and we may seek to acquire additional IBX centers, real estate for development of new IBX centers, or complementary businesses, such as IXEurope and Virtu, products, services or technologies. As a result of these acquisitions, we may be required to incur additional debt and expenditures and issue additional shares of our common stock to pay for the acquired businesses, products, services or technologies, which may dilute our stockholders’ ownership interest and may delay, or prevent, our profitability. These acquisitions may also expose us to risks such as:

We cannot assure you that the price for any future acquisitions will be similar to prior IBX acquisitions. In fact, we expect acquisition costs, including capital expenditures required to build or render new IBX centers operational, to increase in the future. If our revenue does not keep pace with these potential acquisition and expansion costs, we may not be able to maintain our current or expected margins as we absorb these additional expenses. There is no assurance we would successfully overcome these risks or any other problems encountered with these acquisitions.

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Our business could be harmed by prolonged electrical power outages or shortages, increased costs of energy or general lack of availability of electrical resources.

Our IBX centers are susceptible to regional costs of power, electrical power shortages, planned or unplanned power outages and limitations, especially internationally, on the availability of adequate power resources.

Power outages, such as those that occurred in California during 2001, the Northeast in 2003, and from the tornados on the U.S. east coast in 2004, could harm our customers and our business. We attempt to limit exposure to system downtime by using backup generators and power supplies; however, we may not be able to limit our exposure entirely even with these protections in place, as was the case with the power outages we experienced in our Chicago and Washington, D.C. metro area IBX centers in 2005 and London metro area IBX centers in 2007.

In addition, global fluctuations in the price of power can increase the cost of energy, and although contractual price increase clauses may exist in some of our customer agreements, we may not be able to pass these increased costs on to our customers.

In each of our markets, we rely on third parties to provide a sufficient amount of power for current and future customers. At the same time, power and cooling requirements are growing on a per unit basis. As a result, some customers are consuming an increasing amount of power per cabinet. We generally do not control the amount of electric power our customers draw from their installed circuits. This means that we could face power limitations in our centers. This could have a negative impact on the effective available capacity of a given center and limit our ability to grow our business, which could have a negative impact on our financial performance, operating results and cash flows.

We may also have difficulty obtaining sufficient power capacity for potential expansion sites in new or existing markets. We may experience significant delays and substantial increased costs demanded by the utilities to provide the level of electrical service required by our current IBX center designs.

We may be forced to take steps, and may be prevented from pursuing certain business opportunities, to ensure compliance with certain tax-related covenants agreed to by us.

We agreed to a covenant in connection with our combination with i-STT Pte Ltd and Pihana Pacific, Inc. in 2002 (which we refer to as the FIRPTA covenant) that we would use all commercially reasonable efforts to ensure that at all times from and after the closing of the combination none of our capital stock issued to STT Communications would constitute “United States real property interests” within the meaning of Section 897(c) of the Code. Under Section 897(c) of the Code, our capital stock issued to STT Communications would generally constitute “United States real property interests” at such point in time that the fair market value of the “United States real property interests” owned by us equals or exceeds 50% of the sum of the aggregate fair market values of (a) our “United States real property interests,” (b) our interests in real property located outside the United States and (c) any other assets held by us which are used or held for use in our trade or business. Currently, the fair market value of our “United States real property interests” is significantly below the 50% threshold. However, in order to ensure compliance with the FIRPTA covenant, we may be limited with respect to the business opportunities we may pursue, particularly if the business opportunities would increase the amounts of “United States real property interests” owned by us or decrease the amount of other assets owned by us. In addition, we may take proactive steps to avoid our capital stock being deemed a “United States real property interest,” including, but not limited to, (a) a sale-leaseback transaction with respect to some or all of our real property interests, or (b) the formation of a holding company organized under the laws of the Republic of Singapore which would issue shares of its capital stock in exchange for all of our outstanding stock (which would require the submission of that transaction to our stockholders for their approval and the consummation of that exchange). We will take these actions only if such actions are commercially reasonable for our stockholders and us. We have entered into an agreement with STT Communications and its affiliate pursuant to which we will no longer be bound by the FIRPTA covenant as of September 30, 2009. If we were to breach this covenant, we may be liable for damages to STT Communications.

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Increases in property taxes could adversely affect our business, financial condition and results of operations.

Our IBX centers are subject to state and local real property taxes in the U.S. and certain of our European jurisdictions. The state and local real property taxes on our IBX centers may increase as property tax rates change and as the value of the properties are assessed or reassessed by taxing authorities. Many state and local governments are facing budget deficits, which may cause them to increase assessments or taxes. If property taxes increase, our business, financial condition and operating results could be adversely affected.

A small number of our stockholders has voting control over a substantial portion of our stock and has influence over matters requiring stockholder consent.

Several of our stockholders each hold voting control over greater than 10% of our outstanding common stock. In addition, these stockholders are not prohibited from buying shares of our stock in public or private transactions. As a result, each of these stockholders is able to exercise significant control over all matters requiring stockholder approval, including the election of directors and approval of significant corporate transactions, which could prevent or delay a third party from acquiring or merging with us.

Our non-U.S. customers include numerous related parties of STT Communications.

We continue to have contractual and other business relationships and may engage in material transactions with affiliates of STT Communications, a greater than 10% stockholder. Circumstances may arise in which the interests of STT Communications’ affiliates may conflict with the interests of our other stockholders. In addition, entities affiliated with STT Communications make investments in various companies. They have invested in the past, and may invest in the future, in entities that compete with us. In the context of negotiating commercial arrangements with affiliates, conflicts of interest have arisen in the past and may arise, in this or other contexts, in the future. We cannot assure you that any conflicts of interest will be resolved in our favor.

Environmental regulations may impose upon us new or unexpected costs.

We are subject to various environmental and health and safety laws and regulations, including those relating to the generation, storage, handling and disposal of hazardous substances and wastes. Certain of these laws and regulations also impose joint and several liability, without regard to fault, for investigation and cleanup costs on current and former owners and operators of real property and persons who have disposed of or released hazardous substances into the environment. Our operations involve the use of hazardous substances and materials such as petroleum fuel for emergency generators, as well as batteries, cleaning solutions and other materials. In addition, we lease, own or operate real property at which hazardous substances and regulated materials have been used in the past. At some of our locations, hazardous substances or regulated materials are known to be present in soil or groundwater and there may be additional unknown hazardous substances or regulated materials present at sites we own, operate or lease. At some of our locations, there are land use restrictions in place relating to earlier environmental cleanups that do not materially limit our use of the sites. To the extent any hazardous substances or any other substance or material must be cleaned up or removed from our property, we may be responsible under applicable laws, regulations or leases for the removal or cleanup of such substances or materials, the cost of which could be substantial.

In addition, we are subject to environmental, health and safety laws regulating air emissions, storm water management and other issues arising in our business. While these obligations do not normally impose material costs upon our operations, unexpected events, equipment malfunctions and human error, among other factors, can lead to violations of environmental laws, regulations or permits. Noncompliance with existing, or adoption of more stringent, environmental or health and safety laws and regulations or the discovery of previously unknown contamination could require us to incur costs or become the basis of new or increased liabilities that could be material.

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Fossil fuel combustion creates greenhouse gas emissions that are linked to global climate change. Regulations to limit greenhouse gas emissions are coming into force in the European Union in an effort to prevent or reduce climate change. In the United States, federal proposals are under consideration that would implement some form of regulation or taxation to mitigate greenhouse gas emissions. Several states within the United States have adopted laws intended to limit fossil fuel consumption and/or encourage renewable energy development for the same purpose. The proposals include a tax on carbon, a carbon “cap-and-trade” market, and/or other restrictions on carbon and greenhouse gas emissions. California’s recently enacted Global Warming Solutions Act of 2006 established a statewide greenhouse gas emissions cap and will require mandatory emissions reporting. We do not anticipate to be directly regulated by each of the potential or developing climate change-related laws, but such legislation is likely to increase the costs of electricity or fossil fuels, and these cost increases could materially increase our costs of operation or limit the availability of electricity or emergency generator fuels. If laws reducing greenhouse gas emissions are passed, we may be required to modify our emergency power sources systems, buildings or other infrastructure in order to comply, the cost of which could be substantial.

To the extent any of these environmental regulations impose new or unexpected costs, our business, results of operations or financial conditions may be adversely affected.

We depend on a number of third parties to provide Internet connectivity to our IBX centers; if connectivity is interrupted or terminated, our operating results and cash flow could be materially adversely affected.

The presence of diverse telecommunications carriers’ fiber networks in our IBX centers is critical to our ability to retain and attract new customers. We are not a telecommunications carrier, and as such we rely on third parties to provide our customers with carrier services. We believe that the availability of carrier capacity will directly affect our ability to achieve our projected results. We rely primarily on revenue opportunities from the telecommunications carriers’ customers to encourage them to invest the capital and operating resources required to connect from their centers to our IBX centers. Carriers will likely evaluate the revenue opportunity of an IBX center based on the assumption that the environment will be highly competitive. We cannot assure you that any carrier will elect to offer its services within our IBX centers or that once a carrier has decided to provide Internet connectivity to our IBX centers that it will continue to do so for any period of time. Further, many carriers are experiencing business difficulties or announcing consolidations. As a result, some carriers may be forced to downsize or terminate connectivity within our IBX centers, which could have an adverse effect on our operating results.

Our new IBX centers require construction and operation of a sophisticated redundant fiber network. The construction required to connect multiple carrier facilities to our IBX centers is complex and involves factors outside of our control, including regulatory processes and the availability of construction resources. If the establishment of highly diverse Internet connectivity to our IBX centers does not occur, is materially delayed or is discontinued, or is subject to failure, our operating results and cash flow will be adversely affected. Any hardware or fiber failures on this network may result in significant loss of connectivity to our new IBX expansion centers. This could affect our ability to attract new customers to these IBX centers or retain existing customers.

Our networks may be vulnerable to unauthorized persons accessing our systems, which could disrupt our operations and result in the theft of our proprietary information.

A party who is able to breach the security measures on our networks could misappropriate either our proprietary information or the personal information of our customers, or cause interruptions or malfunctions in our operations. We may be required to expend significant capital and resources to protect against such threats or to alleviate problems caused by breaches in security, which could have a material adverse effect on our financial performance and operating results.

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A small number of customers, including IBM, account for a significant portion of our revenues, and the loss of any of these customers could significantly harm our business, financial condition and results of operations.

While no single customer accounted for 10% of our revenues for the year ended December 31, 2007 or the year ended December 31, 2006, excluding the impact of the IXEurope acquisition, our top 10 customers accounted for 23% and 25%, respectively, of our revenues during these periods. As of December 31, 2007, we had 1,881 customers. Notwithstanding our acquisition of IXEurope and the integration of its customer base with ours, we expect that a small percentage of our customers will continue to account for a significant portion of our revenues for the foreseeable future. We cannot guarantee that we will retain these customers or that they will maintain their commitments in our IBX centers at current levels. For example, although the term of our contract with IBM, our single largest customer, runs through 2011, IBM currently has the right to reduce its commitment to us pursuant to the terms and requirements of its customer agreement. If we lose any of these key customers, or if any of them decide to reduce the level of their commitment to us, our business, financial condition and results of operations could be adversely affected.

We resell products and services of third parties that may require us to pay for such products and services even if our customers fail to pay us for the products and services, which may have a negative impact on our operating results.

In order to provide resale services such as bandwidth, managed services and other network management services, we contract with third party service providers. These services require us to enter into fixed term contracts for services with third party suppliers of products and services. If we experience the loss of a customer who has purchased a resale product, we will remain obligated to continue to pay our suppliers for the term of the underlying contracts. The payment of these obligations without a corresponding payment from customers will reduce our financial resources and may have a material adverse effect on our operating and financial results and cash flows.

We may not be able to compete successfully against current and future competitors.

Our IBX centers and other products and services must be able to differentiate themselves from those of other providers of space and services for telecommunications companies, webhosting companies and other colocation providers. In addition to competing with neutral colocation providers, we must compete with traditional colocation providers, including local phone companies, long distance phone companies, Internet service providers and web-hosting facilities. Similarly, with respect to our other products and services, including managed services, bandwidth services and security services, we must compete with more established providers of similar services. Most of these companies have longer operating histories and significantly greater financial, technical, marketing and other resources than us.

Because of their greater financial resources, some of our competitors have the ability to adopt aggressive pricing policies, especially if they have been able to restructure their debt or other obligations. As a result, in the future, we may suffer from pricing pressure that would adversely affect our ability to generate revenues and adversely affect our operating results. In addition, these competitors could offer colocation on neutral terms, and may start doing so in the same metropolitan areas in which we have IBX centers. Some of these competitors may also provide our target customers with additional benefits, including bundled communication services, and may do so in a manner that is more attractive to our potential customers than obtaining space in our IBX centers. If these competitors were able to adopt aggressive pricing policies together with offering colocation space, our ability to generate revenues would be materially adversely affected.

We may also face competition from persons seeking to replicate our IBX concept by building new centers or converting existing centers that some of our competitors are in the process of divesting. We may continue to see increased competition for data center space and customers from large REITS who also operate in our market. We may experience competition from our landlords, some of which are REITS, in this regard. Rather than leasing

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available space in our buildings to large single tenants, they may decide to convert the space instead to smaller square foot units designed for multi-tenant colocation use. Landlords/REITS may enjoy a cost effective advantage in providing services similar to those provided by our IBXs, and in addition to the risk of losing customers to these parties this could also reduce the amount of space available to us for expansion in the future. Competitors may operate more successfully or form alliances to acquire significant market share. Furthermore, enterprises that have already invested substantial resources in outsourcing arrangements may be reluctant or slow to replace, limit or compete with their existing systems by becoming a customer. Customers may also decide it is cost effective for them to build out their own data centers which could have a negative impact on our results of operations. In addition, other companies may be able to attract the same potential customers that we are targeting. Once customers are located in competitors’ facilities, it may be extremely difficult to convince them to relocate to our IBX centers.

Because we depend on the retention of key employees, failure to maintain competitive compensation packages, including equity incentives, may be disruptive to our business.

Our success in retaining key employees and discouraging them from moving to a competitor is an important factor in our ability to remain competitive. As is common in our industry, our employees are typically compensated through grants of equity awards in addition to their regular salaries. In addition to granting equity awards to selected new hires, we periodically grant new equity awards to certain employees as an incentive to remain with us. To the extent we are unable to offer competitive compensation packages to our employees and adequately maintain equity incentives due to equity expensing or otherwise, and should employees decide to leave us, this may be disruptive to our business and may adversely affect our business, financial condition and results of operations.

Because we depend on the development and growth of a balanced customer base, failure to attract and retain this base of customers could harm our business and operating results.

Our ability to maximize revenues depends on our ability to develop and grow a balanced customer base, consisting of a variety of companies, including network service providers, site and performance management companies, and enterprise and content companies. The more balanced the customer base within each IBX center, the better we will be able to generate significant interconnection revenues, which in turn increases our overall revenues. Our ability to attract customers to our IBX centers will depend on a variety of factors, including the presence of multiple carriers, the mix of products and services offered by us, the overall mix of customers, the IBX center’s operating reliability and security and our ability to effectively market our services. In addition, some of our customers are, and are likely to continue to be, Internet companies that face many competitive pressures and that may not ultimately be successful. If these customers do not succeed, they will not continue to use the IBX centers. This may be disruptive to our business and may adversely affect our business, financial condition and results of operations.

Our products and services have a long sales cycle that may materially adversely affect our business, financial condition and results of operations.

A customer’s decision to license cabinet space in one of our IBX centers and to purchase additional services typically involves a significant commitment of resources. In addition, some customers will be reluctant to commit to locating in our IBX centers until they are confident that the IBX center has adequate carrier connections. As a result, we have a long sales cycle. Furthermore, we may expend significant time and resources in pursuing a particular sale or customer that does not result in revenue. Delays due to the length of our sales cycle may materially adversely affect our business, financial condition and results of operations.

The failure to obtain favorable terms when we renew our IBX center leases could harm our business and results of operations.

While we own certain of our IBX centers, others are leased under long-term arrangements with lease terms expiring at various dates ranging from 2010 to 2027. These leased centers have all been subject to significant

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development by us in order to convert them from, in most cases, vacant buildings or warehouses into IBX centers. All of our IBX center leases have renewal options available to us. However, these renewal options provide for rent set at then-prevailing market rates. To the extent that then-prevailing market rates are higher than present rates, these higher costs may adversely impact our business and results of operations.

We are exposed to fluctuations in the market values of our portfolio investments and in interest rates; impairment of our investments could harm our results of operations.

We maintain an investment portfolio of various holdings, types and maturities. These securities are generally classified as available-for-sale and, consequently, are recorded on our consolidated balance sheets at fair value with unrealized gains or losses as a separate component of accumulated other comprehensive income or loss. Our portfolio includes fixed income securities, the values of which are subject to market price volatility. If the market price declines, we may recognize in our statements of operations the decline in fair value of our investments below the cost basis when the decline is judged to be other-than-temporary. For information regarding the sensitivity of and risks associated with the market value of our portfolio and interest rates, refer to our discussion of “Quantitative and Qualitative Disclosures About Market Risk” included in Item 7A of this Annual Report on Form 10-K.

If the market price of our stock continues to be highly volatile, the value of an investment in our common stock may decline.

Since January 1, 2007, the closing sale price of our common stock on the NASDAQ Global Select Market ranged from $69.29 to $116.66 per share. The market price of the shares of our common stock has been and may continue to be highly volatile. Actual sales, or the market’s perception with respect to possible sales, of a substantial number of shares of our common stock within a narrow period of time could cause our stock price to fall. Announcements by others or us may also have a significant impact on the market price of our common stock. These announcements may include:

The stock market has from time to time experienced extreme price and volume fluctuations, which have particularly affected the market prices for emerging telecommunications companies, and which have often been unrelated to their operating performance. These broad market fluctuations may adversely affect the market price of our common stock.

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We are subject to securities class action and derivative litigation, which may harm our business and results of operations.

In the past, securities class action litigation has often been brought against a company following periods of volatility in the market price of its securities. During the quarter ended September 30, 2001, putative shareholder class action lawsuits were filed against us, a number of our officers and directors, and several investment banks that were underwriters of our initial public offering. Similar complaints were filed against more than 300 other issuers, their officers and directors, and investment banks. The suits allege that the underwriter defendants agreed to allocate stock in our initial public offering to certain investors in exchange for excessive and undisclosed commissions and agreements by those investors to make additional purchases in the aftermarket at pre-determined prices. Plaintiffs allege that the prospectus for our initial public offering was false and misleading and in violation of the securities laws because it did not disclose these arrangements. A previously agreed upon settlement with the plaintiffs has been terminated. On August 14, 2007, the plaintiffs filed amended complaints in six cases selected as test, or “focus,” cases and moved for class certification on September 27, 2007. If plaintiffs are successful in obtaining class certification in the “focus” cases, they will also likely file an amended complaint against us. We are continuing to participate in the defense of this litigation, which may increase our expenses and divert management’s attention and resources. In addition, we may, in the future, be subject to other securities class action or similar litigation.

On June 29, 2006 and September 18, 2006, shareholder derivative actions were filed in the Superior Court of the State of California, County of San Mateo, naming Equinix as a nominal defendant and several of Equinix’s current and former officers and directors as individual defendants. These actions were consolidated, and the consolidated complaint was filed in January 2007. In March 2007, the state court stayed this action in deference to a federal shareholder derivative action filed in the United States District Court for the Northern District of California in October 2006. The federal action named Equinix as a nominal defendant and several current and former officers and directors as individual defendants. This complaint alleged that the individual defendants breached their fiduciary duties and violated California and federal securities laws as a result of purported backdating of stock options, insider trading and the dissemination of false statements. On April 12, 2007, the federal action was voluntarily dismissed without prejudice pursuant to a joint stipulation entered as an order by the court. On May 3, 2007, the state court lifted the stay on proceedings in the state court action and set a briefing schedule permitting us to file a motion to dismiss on the grounds that plaintiffs lack standing to sue on our behalf. We filed our motion to dismiss on June 4, 2007 and appeared for a hearing on the motion on August 6, 2007. The state court granted our motion to dismiss and granted plaintiffs leave to amend their consolidated complaint. On October 1, 2007, plaintiffs filed an amended consolidated complaint. The amended consolidated complaint alleged that the individual defendants breached their fiduciary duties and violated California securities law as a result of purported backdating of stock option grants, insider trading and the preparation and approval of inaccurate financial results. Plaintiffs sought to recover, on behalf of Equinix, unspecified monetary damages, corporate governance changes, equitable and injunctive relief, restitution and fees and costs. We filed a motion to dismiss the amended consolidated complaint on October 31, 2007 and appeared for a hearing on the motion on February 4, 2008. At the hearing, the state court issued and adopted a tentative ruling granting our motion to dismiss and granting plaintiffs leave to file a second amended consolidated complaint. Plaintiffs have not yet filed their second amended consolidated complaint. In addition to the pending state court derivative action, we may be subject to additional derivative or other lawsuits that may be presented on an individual or class basis alleging claims based on our stock option granting practices. Responding to, investigating and/or defending against these complaints will present a substantial cost to us in both cash and the attention of certain management. Any adverse outcome in litigation could seriously harm our business and results of operations.

Risks Related to Our Industry

If the use of the Internet does not continue to grow, our revenues may not grow.

Acceptance and use of the Internet may not continue to develop at historical rates. Demand for Internet services and products are subject to a high level of uncertainty and are subject to significant pricing pressure. As

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a result, we cannot be certain that a viable market for our IBX centers will materialize. If the market for our IBX centers grows more slowly than we currently anticipate, our revenues may not grow and our operating results could suffer.

Government regulation may adversely affect the use of the Internet and our business.

Various laws and governmental regulations governing Internet related services, related communications services and information technologies and electronic commerce remain largely unsettled, even in areas where there has been some legislative action. This is true both in the U.S. and the various foreign countries in which we operate. It may take years to determine whether and how existing laws, such as those governing intellectual property, privacy, libel, telecommunications services and taxation, apply to the Internet and to related services such as ours. We have limited experience with such international regulatory issues and substantial resources may be required to comply with regulations or bring any non-compliant business practices into compliance with such regulations. In addition, the development of the market for online commerce and the displacement of traditional telephony service by the Internet and related communications services may prompt an increased call for more stringent consumer protection laws or other regulation both in the U.S. and abroad that may impose additional burdens on companies conducting business online and their service providers. The compliance with, adoption or modification of, laws or regulations relating to the Internet, or interpretations of existing laws, could have a material adverse effect on our business, financial condition and results of operation.

Industry consolidation may have a negative impact on our business model.

The telecommunications industry is currently undergoing consolidation. As customers combine businesses, they may require less colocation space, and there may be fewer networks available to choose from. Given the competitive and evolving nature of this industry, further consolidation of our customers and/or our competitors may present a risk to our network neutral business model and have a negative impact on our revenues. In addition, increased utilization levels industry-wide could lead to a reduced amount of attractive expansion opportunities available to us.

Terrorist activity throughout the world and military action to counter terrorism could adversely impact our business.

The September 11, 2001 terrorist attacks in the U.S., the ensuing declaration of war on terrorism and the continued threat of terrorist activity and other acts of war or hostility appear to be having an adverse effect on business, financial and general economic conditions internationally. These effects may, in turn, increase our costs due to the need to provide enhanced security, which would have a material adverse effect on our business and results of operations. These circumstances may also adversely affect our ability to attract and retain customers, our ability to raise capital and the operation and maintenance of our IBX centers. We may not have adequate property and liability insurance to cover catastrophic events or attacks.

There is no disclosure to report pursuant to Item 1B.

Our executive offices are located in Foster City, California, and we also have sales offices in several cities throughout the United States. Our Asia-Pacific headquarters office is located in Hong Kong and we also have office space in Singapore; Tokyo, Japan; and Sydney, Australia, which is operated out of our Australia IBX center. Our European headquarters office is located in London, U.K. and our regional sales offices in Europe are based in our IBX centers in Europe. We have entered into leases for or own IBX centers in Ashburn, Virginia; Chicago, Illinois; Dallas, Texas; Los Angeles, San Jose, Santa Clara and Sunnyvale, California; Newark and

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Secaucus, New Jersey; Hong Kong; Singapore; Sydney, Australia; Tokyo, Japan; London, U.K.; Paris, France; Frankfurt, Munich and Dusseldorf, Germany; Zurich and Geneva, Switzerland and Enschede, Zwolle and Amsterdam, Netherlands. We own campuses in Ashburn, Virginia and Frankfurt, Germany that house some of our IBX centers mentioned in the preceding sentence.

On July 30, 2001 and August 8, 2001, putative shareholder class action lawsuits were filed against us, certain of our officers and directors (the “Individual Defendants”), and several investment banks that were underwriters of our initial public offering (the “Underwriter Defendants”). The cases were filed in the United States District Court for the Southern District of New York, purportedly on behalf of investors who purchased our stock between August 10, 2000 and December 6, 2000. In addition, similar lawsuits were filed against approximately 300 other issuers and related parties. The purported class action alleges violations of Sections 11 and 15 of the Securities Act of 1933 and Sections 10(b), Rule 10b-5 and 20(a) of the Securities Exchange Act of 1934 against us and the Individual Defendants. The plaintiffs have since dismissed the Individual Defendants without prejudice. The suits allege that the Underwriter Defendants agreed to allocate stock in our initial public offering to certain investors in exchange for excessive and undisclosed commissions and agreements by those investors to make additional purchases in the aftermarket at pre-determined prices. The plaintiffs allege that the prospectus for our initial public offering was false and misleading and in violation of the securities laws because it did not disclose these arrangements. The action seeks damages in an unspecified amount. On February 19, 2003, the Court dismissed the Section 10(b) claim against us, but denied the motion to dismiss the Section 11 claim. On December 5, 2006, the Second Circuit vacated a decision by the district court granting class certification in six “focus” cases, which are intended to serve as test cases. Plaintiffs selected these six cases, which do not include Equinix. On April 6, 2007, the Second Circuit denied a petition for rehearing filed by plaintiffs, but noted that plaintiffs could ask the district court to certify more narrow classes than those that were rejected.

Prior to the Second Circuit’s decision, a majority of issuers, including Equinix, and their insurers had submitted a settlement agreement to the district court for approval. In light of the Second Circuit opinion, the parties agreed that the settlement could not be approved. On June 25, 2007, the Court approved a stipulation filed by the plaintiffs and the issuers which terminated the proposed settlement. On August 14, 2007, plaintiffs filed amended complaints in the six focus cases. The amended complaints against the focus case issuers include a number of changes, such as changes to the definition of the purported class of investors, and the elimination of the individual defendants as defendants. The six focus case issuers and the underwriters named as defendants in the focus cases filed motions to dismiss the amended complaints against them on November 14, 2007. On September 27, 2007, plaintiffs filed a motion for class certification in the six focus cases. On December 21, 2007, the issuers and the underwriters filed papers opposing plaintiffs’ class certification motion, and plaintiffs filed an opposition to defendants’ motions to dismiss. Due to the inherent uncertainties of litigation, we cannot accurately predict the ultimate outcome of the matter. We cannot predict whether we will be able to renegotiate a settlement that complies with the Second Circuit’s mandate, nor can we predict the amount of any such settlement.

While we are unable at this time to determine whether the outcome of the litigation would have a material impact on our results of operations, financial condition or cash flows, we have insurance coverage that we believe is sufficient to cover any reasonably possible liability resulting from this litigation. We and our officers and directors intend to continue to defend the actions vigorously.

On June 29, 2006 and September 18, 2006, shareholder derivative actions were filed in the Superior Court of the State of California, County of San Mateo, naming Equinix as a nominal defendant and several of Equinix’s current and former officers and directors as individual defendants. These actions were consolidated, and the consolidated complaint was filed in January 2007. In March 2007, the state court stayed this action in deference to a federal shareholder derivative action filed in the United States District Court for the Northern District of California in October 2006. The federal action named Equinix as a nominal defendant and several current and

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former officers and directors as individual defendants. This complaint alleged that the individual defendants breached their fiduciary duties and violated California and federal securities laws as a result of purported backdating of stock options, insider trading and the dissemination of false statements. On April 12, 2007, the federal action was voluntarily dismissed without prejudice pursuant to a joint stipulation entered as an order by the court. On May 3, 2007, the state court lifted the stay on proceedings in the state court action and set a briefing schedule permitting us to file a motion to dismiss on the grounds that plaintiffs lack standing to sue on our behalf. We filed our motion to dismiss on June 4, 2007 and appeared for a hearing on the motion on August 6, 2007. The state court granted our motion to dismiss and granted plaintiffs leave to amend their consolidated complaint. On October 1, 2007, plaintiffs filed an amended consolidated complaint. The amended consolidated complaint alleged that the individual defendants breached their fiduciary duties and violated California securities law as a result of purported backdating of stock option grants, insider trading and the preparation and approval of inaccurate financial results. Plaintiffs sought to recover, on behalf of Equinix, unspecified monetary damages, corporate governance changes, equitable and injunctive relief, restitution and fees and costs. We filed a motion to dismiss the amended consolidated complaint on October 31, 2007 and appeared for a hearing on the motion on February 4, 2008. At the hearing, the state court issued and adopted a tentative ruling granting our motion to dismiss and granting plaintiffs leave to file a second amended consolidated complaint. Plaintiffs have not yet filed their second amended consolidated complaint. In addition to the pending state court derivative action, we may be subject to additional derivative or other lawsuits that may be presented on an individual or class basis alleging claims based on our stock option granting practices.

Responding to, investigating and/or defending against civil litigations and government inquiries regarding our stock option grants and practices will present a substantial cost to us in both cash and the attention of certain management and may have a negative impact on our operations. In addition, in the event of any negative finding or assertion by a court of law or any third-party claim related to our stock option granting practices, we may be liable for damages, fines or other civil or criminal remedies, or be required to restate our prior period financial statements or adjust our current period financial statements. Any such adverse action could have a material adverse effect on our business and current market value.

None during the fourth quarter of the fiscal year ended December 31, 2007.

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PART II

Our common stock is quoted on the Nasdaq National Market System under the symbol of “EQIX.” Our common stock began trading in August 2000. The following table sets forth on a per share basis the low and high closing prices of our common stock as reported by the Nasdaq National Market during the last two years.

As of January 31, 2008, we had issued 36,646,255 shares of our common stock held by approximately 253 registered holders.

We have never declared or paid any cash dividends on our common stock and we do not anticipate paying cash dividends in the foreseeable future. We currently intend to retain our earnings, if any, for future growth. Future dividends on our common stock, if any, will be at the discretion of our Board of Directors and will depend on, among other things, our operations, capital requirements and surplus, general financial condition, contractual restrictions and such other factors that our Board of Directors may deem relevant. Our ability to pay cash dividends is limited under our line of credit with Silicon Valley Bank, such that, without the prior written consent of Silicon Valley Bank, the aggregate amount of any cash dividends may not exceed 25% of our assets.

During the year ended December 31, 2007, we did not issue or sell any unregistered securities.

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Stock Performance Graph

The graph set forth below compares the cumulative total stockholder return on Equinix’s common stock between December 31, 2002 and December 31, 2007 with the cumulative total return of (i) The NASDAQ Composite Index and (ii) The NASDAQ Telecommunications Index. This graph assumes the investment of $100.00 on December 31, 2002 in Equinix’s common stock, in The NASDAQ Composite Index, and in The NASDAQ Telecommunications Index, and assumes the reinvestment of dividends, if any.

Equinix cautions that the stock price performance shown in the graph below is not indicative of, nor intended to forecast, the potential future performance of Equinix’s common stock.

Notwithstanding anything to the contrary set forth in any of Equinix’s previous or future filings under the Securities Act of 1933, as amended, or Securities Exchange Act of 1934, as amended, that might incorporate this Form 10-K or future filings made by Equinix under those statutes, the Stock Performance Graph shall not be deemed filed with the Securities and Exchange Commission and shall not be deemed incorporated by reference into any of those prior filings or into any future filings made by Equinix under those statutes.

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The following consolidated statement of operations data for the five years ended December 31, 2007 and the consolidated balance sheet data as of December 31, 2007, 2006, 2005, 2004 and 2003 have been derived from our audited consolidated financial statements and the related notes to the financial statements. Our historical results are not necessarily indicative of the results to be expected for future periods. The following selected consolidated financial data for the three years ended December 31, 2007 and as of December 31, 2007 and 2006, should be read in conjunction with our consolidated financial statements and the related notes to the consolidated financial statements and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included elsewhere in this Annual Report on Form 10-K.

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The following commentary should be read in conjunction with the financial statements and related notes contained elsewhere in this Annual Report on Form 10-K. The information in this discussion contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such statements are based upon current expectations that involve risks and uncertainties. Any statements contained herein that are not statements of historical fact may be deemed to be forward-looking statements. For example, the words “believes,” “anticipates,” “plans,” “expects,” “intends” and similar expressions are intended to identify forward-looking statements. Our actual results and the timing of certain events may differ significantly from the results discussed in the forward-looking statements. Factors that might cause such a discrepancy include, but are not limited to, those discussed in “Liquidity and Capital Resources” and “Risk Factors” elsewhere in this Annual Report on Form 10-K. All forward-looking statements in this document are based on information available to us as of the date hereof and we assume no obligation to update any such forward-looking statements.

Overview

Equinix provides network neutral colocation, interconnection and managed services to enterprises, content companies, systems integrators and the world’s largest network providers. On September 14, 2007, we completed the acquisition of IXEurope Plc, or IXEurope, headquartered in London, U.K., whereby IXEurope became our wholly-owned subsidiary. We refer to this transaction as the IXEurope acquisition. IXEurope, a similar business to ours, operated network neutral data centers in the United Kingdom, France, Germany and Switzerland and provided us with an immediate entry into the European data center market, supplementing our existing U.S. and Asia-Pacific operations. As of December 31, 2007, we operate IBX centers in the Chicago, Dallas, Los Angeles, New York, Silicon Valley and Washington, D.C. metro areas in the United States, Hong Kong, Singapore, Australia and Japan in the Asia-Pacific region, and the United Kingdom, France, Germany and Switzerland in the Europe region. In February 2008, we completed the acquisition of Virtu Secure Webservices B.V. based in the Netherlands (see “Recent Developments” below).

Direct interconnection to our aggregation of networks, which serve more than 90% of the world’s Internet routes, allows our customers to increase performance while significantly reducing costs. Based on our network neutral model and the quality of our IBX centers, we believe we have established a critical mass of customers. As more customers locate in our IBX centers, it benefits their suppliers and business partners to do so as well to gain the full economic and performance benefits of direct interconnection. These partners, in turn, pull in their business partners, creating a “network effect” of customer adoption. Our interconnection services enable scalable, reliable and cost-effective interconnection and traffic exchange thus lowering overall cost and increasing flexibility. Our focused business model is based on our critical mass of customers and the resulting network effect. This critical mass and the resulting network effect, combined with our strong financial position, continue to drive new customer growth and bookings.

Historically, our market has been served by large telecommunications carriers who have bundled their telecommunications products and services with their colocation offerings. A number of these telecommunications carriers have eliminated or reduced their colocation footprint to focus on their core businesses. In 2003, as an example, one major telecommunications company, Sprint, announced its plans to exit the colocation and hosting market in order to focus on its core service offerings, while another telecommunications company, Cable & Wireless Plc, sold its U.S. assets to another telecommunications company, Savvis Communications Corp, in a bankruptcy auction. In 2005 and 2006, other providers, such as Abovenet and Verio, have selectively sold off certain of their colocation centers. Each of these colocation providers own and operate a network. We do not own or operate a network, yet have greater than 300 networks operating out of our IBX centers. As a result, we are able to offer our customers a substantial choice of networks given our network neutrality thereby allowing our customers to choose from numerous network service providers. We believe this is a distinct and sustainable competitive advantage, especially when the

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telecommunications industry is experiencing many business challenges and changes as evidenced by the numerous bankruptcies and consolidations within this industry during the past several years. Furthermore, this industry consolidation has constrained the supply of suitable data center space and has created a favorable pricing environment for us.

On a consolidated basis, our customer count increased to 1,881 as of December 31, 2007 versus 1,290 as of December 31, 2006, an increase of 46%. This significant increase was primarily due to the IXEurope acquisition in September 2007. Our utilization rate represents the percentage of our cabinet space billing versus total cabinet space available. Excluding the impact of the IXEurope acquisition, our utilization rate was 58% as of December 31, 2007 and 56% as of December 31, 2006; however, excluding the impact of our recent IBX center openings in the Chicago, New York, Singapore, Tokyo and Washington, D.C. metro areas, our utilization rate would have been 64% as of December 31, 2007. Our utilization rate varies from market to market among our IBX centers in our markets across the U.S., Asia-Pacific and Europe. We continue to monitor the available capacity in each of our selected markets. To the extent we have limited capacity available in a given market it may limit our ability for growth in that market. We perform demand studies on an ongoing basis to determine if future expansion is warranted in a market. In addition, power and cooling requirements for most customers are growing on a per unit basis. As a result, customers are consuming an increasing amount of power per cabinet. Although we generally do not control the amount of draw our customers take from installed circuits, we have negotiated power consumption limitations with certain of our high power demand customers. This increased power consumption has driven the requirement to build out our new IBX centers to support power and cooling needs twice that of previous IBX centers. We could face power limitations in our centers even though we may have additional physical capacity available within a specific IBX center. This could have a negative impact on the available utilization capacity of a given center, which could have a negative impact on our ability to grow revenues, affecting our financial performance, operating results and cash flows. As a result of these power limitations in our IBX centers that were opened before 2007, the maximum utilization rate that we expect to achieve for most IBX centers until we consider an IBX center full or sold-out is approximately 75-80% depending on the building configurations. Due to these power limitations, commencing with the first quarter of 2007, we began to track the utilization of our centers on a net sellable cabinet capacity basis. Therefore, our utilization rate as of December 31, 2007 on a net sellable cabinet capacity basis, excluding the impact of the IXEurope acquisition, was 73% versus the 58% noted above under our previous utilization rate methodology, which does not factor in these power limitations.

Strategically, we will continue to look at attractive opportunities to grow our market share and selectively improve our footprint and service offerings, such as our 2005 expansions in the Chicago, Los Angeles and Silicon Valley metro area markets, our 2006 expansions in the Chicago, New York, Tokyo, Japan, and Washington, D.C. metro area markets, which opened in 2007, and our 2007 Los Angeles and San Jose property acquisitions and expansions in the Los Angeles, Silicon Valley, Singapore and Washington, D.C. metro area markets, as well as the IXEurope acquisition. However, we will continue to be very selective with any similar opportunities. As was the case with these recent expansions in our existing markets in the Chicago, Los Angeles, Silicon Valley, Singapore, Tokyo and Washington, D.C. metro area markets or our expansion in new markets, such as Europe with the IXEurope acquisition, our expansion criteria will be dependent on demand from new and existing customers, quality of the design, power capacity, access to networks, capacity availability in current market location, amount of incremental investment required by us in the targeted property, lead-time to break-even and in-place customers. Like our recent expansions, the right combination of these factors may be attractive to us. Dependent on the particular deal, these acquisitions may require upfront cash payments and additional capital expenditures or may be funded through long-term financing arrangements in order to bring these properties up to Equinix standards. Property expansion may be in the form of a purchase of real property, long-term leasing arrangements or acquisitions. Future purchases, construction or acquisitions may be completed by us or with partners or potential customers to minimize the outlay of cash, which can be significant.

Our business is based on a recurring revenue model comprised of colocation, interconnection and managed infrastructure services. We consider these services recurring as our customers are billed on a fixed and recurring

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basis each month for the duration of their contract, which is generally one to three years in length. Our recurring revenues are a significant component of our total revenues, comprising greater than 90% of our total revenues. Over the past few years, greater than half of our then existing customers order new services in any given quarter representing greater than half of the new orders received in each quarter.

Our non-recurring revenues are primarily comprised of installation services related to a customer’s initial deployment and professional services that we perform. These services are considered to be non-recurring as they are billed typically once and only upon completion of the installation or professional services work performed. The majority of these non-recurring revenues are typically billed on the first invoice distributed to the customer in connection with their initial installation. As a percentage of total revenues, we expect non-recurring revenues to represent less than 10% of total revenues for the foreseeable future.

The largest cost components of our cost of revenues are depreciation, rental payments related to our leased IBX centers, utility costs, including electricity and bandwidth, IBX employees’ salaries and benefits, including stock-based compensation, supplies and equipment and security services. A substantial majority of our cost of revenues is fixed in nature and should not vary significantly from period to period, unless we add or open new IBX centers. However, there are certain costs, which are considered more variable in nature, including utilities and supplies that are directly related to growth in our existing and new customer base. We expect the cost of our utilities, specifically electricity, will increase in the future on a per unit or fixed basis in addition to on a customer growth or variable basis. In addition, the cost of electricity is generally higher in the summer months as compared to other times of the year.

Sales and marketing expenses consist primarily of compensation and related costs for sales and marketing personnel, including stock-based compensation, sales commissions, marketing programs, public relations, promotional materials and travel.

General and administrative expenses consist primarily of salaries and related expenses, including stock-based compensation, accounting, legal and other professional service fees, and other general corporate expenses such as our corporate headquarters office lease and some depreciation expense.

Recent Developments

In January 2007, we entered into a conditional purchase agreement to purchase the building and property where our original Silicon Valley IBX center is located for $65.2 million, including closing costs, which was paid in full in a cash transaction during July 2007 following an initial $6.5 million cash deposit paid in January 2007. Furthermore, in August 2007, we purchased an adjacent piece of land for $6.3 million, including closing costs, for potential future expansion. We refer to these transactions as the Silicon Valley property acquisition.

In February 2007, one of our wholly-owned subsidiaries obtained a loan of up to $110.0 million to finance up to 60% of the development and construction costs of our Chicago metro area IBX expansion project. We refer to this transaction as the Chicago IBX financing. We periodically receive advances of funds in conjunction with costs incurred for the construction of our Chicago metro area IBX expansion project, which we refer to as our loan payable. As of December 31, 2007, we had received advances totaling $105.6 million. As a result, up to $4.4 million remained available for borrowing from the Chicago IBX financing and is expected to be borrowed during the first quarter of 2008. The loan payable has a maturity date of January 31, 2010, with options to extend for up to an additional two years, in one-year increments, upon satisfaction of certain extension conditions. The loan payable bears interest at a floating rate (one, three or six month LIBOR plus 2.75%) with interest payable monthly, which commenced March 1, 2007. In February 2008, we received additional advances totaling $1.7 million, bringing the cumulative loan payable to date to $107.3 million with an approximate interest rate of 6.08% per annum.

In March and July 2007, we entered into long-term leases for new space in the same building in which our existing Singapore IBX center is located. Minimum payments under these leases, which qualify as operating

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leases, totaled 5.0 million Singapore dollars (approximately $3.5 million as translated using effective exchange rates at December 31, 2007) in cumulative lease payments with monthly payments commencing in the third quarter of 2007. We are building out this new space in multiple phases and plan to invest approximately $16.2 million in total, of which approximately $15.5 million was incurred as of December 31, 2007. We refer to this project as the Singapore IBX expansion project. The first phase of the Singapore IBX expansion project was opened for customers in the third quarter of 2007; the second and third phases of this project are expected to open during the first quarter and fourth quarter, respectively, of 2008.

In March 2007, we extended an offer of employment to Stephen M. Smith to serve as our Chief Executive Officer and President. Mr. Smith commenced his employment with us on April 2, 2007.

In March 2007, we entered into agreements with certain holders of our convertible subordinated debentures due February 15, 2024, pursuant to which we agreed to exchange an aggregate of 1.4 million newly issued shares of our common stock for such holders’ $54.0 million of $86.3 million principal amount of the convertible subordinated debentures. The number of shares of common stock issued equaled the amount issuable upon conversion of the convertible subordinated debentures in accordance with their original terms. In addition, each holder received cash consideration equal to accrued and unpaid interest through the redemption date totaling $110,000, as well as the present value of future interest due through February 15, 2009 and an incremental fee, totaling $3.4 million, which was recorded as loss on conversion of debt during the three months ended March 31, 2007.

In March 2007, we announced our intention to build out a new IBX center within the Ashburn campus, which will be the fifth IBX center in the Washington, D.C. metro area, in order to further expand our existing Washington, D.C metro area IBX center. We refer to this project as the Washington, D.C. metro area IBX expansion project. We plan to spend approximately $78.0 million for the Washington, D.C. metro area IBX expansion project, of which approximately $20.0 million was incurred as of December 31, 2007. We expect to open this IBX center for customers during the second quarter of 2008.

In March 2007, we issued $250.0 million in aggregate principal amount of 2.50% convertible subordinated notes due 2012. The initial conversion rate is 8.9259 shares of common stock per $1,000 principal amount of convertible subordinated notes, subject to adjustment. This represents an initial conversion price of approximately $112.03 per share of common stock or 2.2 million shares of our common stock. Upon conversion, holders will receive, at our election, cash, shares of our common stock or a combination of cash and shares of our common stock. We have used or intend to use the net proceeds from this offering for general corporate purposes, including the funding of our expansion activities and working capital requirements. We refer to this transaction as the 2.50% convertible subordinated notes offering.

In June 2007, we purchased a new property, comprised of land and an empty building, located in El Segundo, California, for $49.1 million, including closing costs, which we paid in full in a cash transaction during June 2007. We refer to this project as the Los Angeles metro area IBX expansion project. We plan to spend approximately $110.0 million for the Los Angeles metro area IBX expansion project, of which $8.2 million was incurred as of December 31, 2007. We expect to open this IBX center for customers during the fourth quarter of 2008.

In June 2007, we announced our plan to invest approximately $41.0 million on one of our existing IBX centers in the Silicon Valley metro area, of which approximately $25.3 million was incurred as of December 31, 2007. We refer to this project as the Silicon Valley metro area IBX expansion project. We expect to open this IBX center for customers during the second quarter of 2008.

In July 2007, Christopher Paisley was elected to our board of directors and our audit committee. Mr. Paisley serves as the audit committee’s chair and as its financial expert.

In August 2007, our two wholly-owned subsidiaries, located in Singapore and Tokyo, Japan, entered into an approximately $40.0 million multi-currency credit facility agreement. We refer to this transaction as the Asia- Pacific financing. The Asia-Pacific financing has a four-year term that allows these two subsidiaries to borrow up

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to 23.0 million Singapore dollars and 2.9 billion Japanese yen, respectively, during the first 12-month period with repayment to occur over the remaining three years in 12 equal quarterly installments. Amounts undrawn at the end of the first 12-month period shall be cancelled. The Asia-Pacific financing has a commitment fee of 0.3% on unutilized amounts during the 12-month draw period and bears interest at a floating rate (the relevant three-month local cost of funds for Singapore and Japan), as applicable, plus 1.85%-2.50% depending on the ratio of our senior indebtedness to our earnings before interest, taxes, depreciation and amortization, or EBITDA, with interest payable quarterly. The Asia-Pacific financing may be used by these two subsidiaries to fund capital expenditures on leasehold improvements, equipment, and other installation costs related to expansion plans in Singapore and Tokyo. The Asia-Pacific financing is guaranteed by the parent company, is secured by the assets of these two subsidiaries, including a pledge of their shares, and has several financial covenants, with which we must comply quarterly. As of December 31, 2007, we had borrowed 18.3 million Singapore dollars at an initial interest rate per annum of 4.66% and 1.5 billion Japanese yen at an initial interest rate per annum of 2.69%. Collectively the amounts borrowed equal to approximately $25.9 million leaving approximately $14.1 million remaining to borrow under the Asia-Pacific financing. In January 2008, the Asia-Pacific financing was amended to allow our subsidiary in Australia to borrow up to 32.0 million Australian dollars under the same general terms described above. This amendment increased the Asia-Pacific financing to approximately $68.0 million.

On September 14, 2007, a wholly-owned subsidiary of ours purchased the entire issued and to be issued share capital of IXEurope, a publicly-held company headquartered in London, U.K. Under the final terms of the IXEurope acquisition, IXEurope shareholders received 140 British pence in cash for each IXEurope share. The purchase price, including direct transaction costs, totaled 271.1 million British pounds or $549.2 million. The IXEurope acquisition was accounted for using the purchase method of accounting in accordance with Statement of Financial Accounting Standard No. 141, “Business Combinations” (“SFAS 141”).

In September 2007, we closed an offering of 4.2 million shares of our common stock at $84.05 per share (the last reported sale price of our common stock on September 20, 2007). We refer to this transaction as the common stock offering. We received total proceeds of $339.9 million, net of the underwriting discount and other offering expenses. In September 2007, we issued $396.0 million in aggregate principal amount of 3.00% convertible subordinated notes due 2014. The initial conversion rate is 7.436 shares of common stock per $1,000 principal amount of convertible subordinated notes, subject to adjustment. This represents an initial conversion price of approximately $134.48 per share of common stock or 2.9 million shares of our common stock. We refer to this transaction as the 3.00% convertible subordinated notes offering.

In October 2007, we amended certain provisions of the $75.0 million Silicon Valley Bank revolving credit line which primarily related to the modification of certain financial covenants as a result of the 3.00% convertible subordinated notes offering.

In October 2007, we entered into a long-term lease for new space in the same building in which our Paris Saint Denis IBX center is located in order to further expand our IBX operations in this location. Minimum payments under this lease, which qualifies as an operating lease, total 5.5 million Euros (approximately $8.0 million as translated using effective exchange rates at December 31, 2007) in cumulative lease payments with monthly payments commencing in the first quarter of 2008. We intend to invest approximately $17.0 million to build out this new IBX center, of which approximately $1.6 million was incurred as of December 31, 2007. We intend to open this IBX center for customer availability during the second quarter of 2008.

In November 2007, we entered into a long-term lease for new space in the same building in which our existing Hong Kong IBX center is located. Minimum payments under this lease, which qualifies as an operating lease, totaled 81.0 million Hong Kong dollars (approximately $10.4 million as translated using effective exchange rates at December 31, 2007) in cumulative lease payments with monthly payments, which commenced in the fourth quarter of 2007. We intend to invest approximately $17.0 million commencing in the first quarter of 2008. We intend to open this IBX center for customer availability during the third quarter of 2008.

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In December 2007, we sold our Equinix mail service offering, which is referred to as EMS, located in Singapore for cash gross proceeds of $1.7 million in a related party transaction. We refer to this transaction as the EMS sale. EMS was a service offering unique to Singapore and was acquired by us in our acquisition of i-STT Pte Ltd on December 31, 2002; however, it was not considered a core service offering for us. EMS was not an asset held for sale prior to this. The EMS sale enables us to focus on our core IBX service offerings in Singapore. We accounted for the EMS sale under the provisions of SFAS No. 144, “Accounting for Impairment or Disposal of Long-Lived Assets,” which resulted in a gain of $1.3 million.

In January 2008, we entered into a long-term lease for a new building located on the same campus as our existing Sydney IBX center and at the same time terminated the existing lease for our original Sydney IBX center by incorporating it into the new lease and extended the original lease term for an additional seven years in a single, lease agreement for both buildings. Minimum payments under this lease, incremental to the previous lease, totaled 12.2 million Australian dollars (approximately $10.7 million as translated using effective exchange rates at December 31, 2007) in cumulative lease payments with monthly payments that commenced in January 2008. We intend to invest approximately $29.5 million commencing in the first quarter of 2008 to build out this new IBX center. We intend to open this IBX center for customer availability during the fourth quarter of 2008.

In January and February 2008, we received additional advances related to the European financing, acquired in connection with the IXEurope acquisition, totaling 7.7 million British pounds or approximately $15.2 million, bringing the cumulative loan payable to date to 49.7 million British pounds or approximately $98.8 million with an approximate blended interest rate of 7.39% per annum. As a result, the amount available to borrow from the European financing totals 32.3 million British pounds or approximately $64.2 million.

In February 2008, we acquired Virtu Secure Webservices B.V., which is referred to as Virtu, a provider of network-neutral data center services in the Netherlands, for a cash payment of 15.0 million Euros or $22.9 million, excluding closing costs. We refer to this transaction as the Virtu acquisition. Under the terms of the Virtu acquisition, we may also pay some additional future contingent consideration, which will be payable in the form of up to 20,000 shares of our common stock and cash of up to 1.5 million euros, contingent upon meeting certain pre-determined future annual operating targets for 2008 to 2011. Virtu, a similar business to ours, operates data centers in the Netherlands, supplementing our existing European operations recently acquired as a result of the IXEurope acquisition. The combined company will operate under the Equinix name and the current Virtu management team will join our existing European management team in running our operations in the Netherlands. The Virtu acquisition will be accounted for using the purchase method of accounting in accordance with SFAS 141. We plan to incur additional capital expenditures of approximately $26.0 million to complete the build-out of the IBX center in Amsterdam currently under construction by Virtu.

Critical Accounting Policies and Estimates

The preparation of our financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an on-going basis, management evaluates its estimates and judgments. Management bases its estimates and judgments on historical experience and on various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Management believes the following critical accounting policies, among others, affect its more significant judgments and estimates used in the preparation of its consolidated financial statements:

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Accounting for Business Combinations. We account for business combinations in accordance with SFAS No. 141, “Business Combinations”, such as the IXEurope acquisition in September 2007. In accordance with business combination accounting, we allocate the purchase price of acquired companies to the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values. Such allocations require management to make significant estimates and assumptions, especially with respect to intangible assets.

Management makes estimates of fair value based upon assumptions believed to be reasonable. These estimates are based on historical experience and information obtained from the management of the acquired companies and are inherently uncertain. Critical estimates in valuing certain of the tangible and intangible assets include but are not limited to: appraised values of property and equipment, future expected cash flows from customer contracts; the fair value of leases acquired, the acquired company’s brand and market position, as well as assumptions about the period of time the acquired brand will continue to be used in the combined company’s product portfolio, if any; and discount rates. Unanticipated events and circumstances may occur which may affect the accuracy or validity of such assumptions, estimates or actual results.

For a given acquisition, we may identify certain pre-acquisition contingencies. If, during the purchase price allocation period, we are able to determine the fair value of a pre-acquisition contingency, we will include that amount in the purchase price allocation. If, as of the end of the purchase price allocation period, we are unable to determine the fair value of a pre-acquisition contingency, we will evaluate whether to include an amount in the purchase price allocation based on whether it is probable a liability had been incurred and whether an amount can be reasonably estimated. With the exception of unresolved tax matters, after the end of the purchase price allocation period, any adjustment to amounts recorded for a pre-acquisition contingency will be included in our operating results in the period in which the adjustment is determined.

We note that accounting for business combinations will be impacted by SFAS No. 157, “Fair Value Measurements”, which we are adopting in 2008 (with certain elements deferred until 2009 as provided in FSP FAS 157-2), and SFAS No. 141(R), “Business Combinations”, which replaces SFAS No. 141, beginning in 2009. We will apply these new accounting pronouncements accordingly for all future business combinations as appropriate.

Accounting for Stock-Based Compensation. We account for stock-based compensation in accordance with SFAS No. 123(R), “Share-Based Payment,” and related pronouncements (“SFAS 123(R)”). We recorded stock-based compensation expense of $42.7 million and $30.8 million, respectively, during the years ended December 31, 2007 and 2006. The fair value of stock options and employee stock purchase plan shares was valued using the Black-Scholes option-pricing model while the fair value of our restricted stock grants with a market price condition was valued using a Monte Carlo simulation option-pricing model. The determination of the fair value of equity awards on the date of grant using an option-pricing model is affected by our stock price as well as assumptions regarding a number of complex and highly subjective variables. These variables include our expected stock price volatility over the term of the awards, actual and projected employee stock option exercise behaviors or expected term, risk-free interest rate and expected dividends.

We record stock-based compensation expense on stock awards expected to vest during the period net of estimated forfeitures. The estimated forfeitures on unvested stock awards are assessed based on our historical forfeiture activity and our expectations about future employee turnover, and these rates are subject to revision in subsequent periods if actual forfeitures differ from those estimates. Higher forfeitures will result in lower stock-based compensation expense while lower forfeiture rates will result in higher stock-based compensation expense.

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We estimate the expected volatility by using the average historical volatility of our common stock that we believe is the best representative of the future volatility. The expected term of options used is calculated by taking the average of the vesting term and the contractual term of the option, as illustrated in Staff Accounting Bulletin No. 107 (“SAB 107”). In 2008, we will apply the provisions of Staff Accounting Bulletin No. 110 (“SAB 110”) in connection with the method of expected term calculation. The risk-free interest rate used is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term on our equity awards. We do not anticipate paying any cash dividends in the foreseeable future and, therefore, the expected dividend rate used is zero.

During the year ended December 31, 2007, stock options granted to employees had a total fair value of $42.6 million compared to $39.2 million during the year ended December 31, 2006. Changes in assumptions (as well as different option-pricing models used for estimating the fair value of stock awards) can significantly affect our future period expense. Based on our analysis, the table below presents the possible impact of increases or decreases of individual variables (representing increases and decreases of 10%, 20%, 30% and 40%) in the assumptions to the fair value of employee stock options granted during the year ended December 31, 2007 (dollars in thousands):

The table above shows that changes in expected volatility present the most significant impact to the increases and decreases in stock-based compensation expense compared to changes in other variables. Assuming other variables remained unchanged, had the expected volatility increased by 40%, our stock-based compensation expense recognized, net of estimated forfeitures, for the year ended December 31, 2007 would have been approximately $1.8 million higher than the reported stock-based compensation expense (the above table demonstrates potential changes to the total value of equity awards, which is generally amortized over four years). Had the expected volatility decreased by 40%, our stock-based compensation expense recognized, net of estimated forfeitures, for the year ended December 31, 2007 would have been approximately $2.2 million lower than the reported stock-based compensation expense. The assumptions used in calculating the fair value of stock-based awards represent our best estimates, but these estimates involve inherent uncertainties and the application of management’s judgment.

The guidance in SFAS 123(R), SAB 107 and SAB 110 is relatively new. The application of these principles may be subject to further interpretation and refinement over time. There are significant differences among

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valuation models, and there is a possibility that we will adopt different valuation models in the future. This may result in a lack of consistency in future periods and materially affect the fair value estimate of stock-based payments. It may also result in a lack of comparability with other companies that use different models, methods and assumptions.

Accounting for Restructuring Charges. We account for restructuring activities in accordance with SFAS No. 146, “Accounting for Costs Associated with Exit or Disposal Activities.” We recorded restructuring charges totaling $33.8 million and $17.7 million, respectively, during the years ended December 31, 2005 and December 31, 2004 for the exit of certain leases. Under the provisions of SFAS No. 146, we had to estimate the future cash payments required to exit these leases, net of any estimated sublease income and expense, through the remainder of these lease terms and then determine the present value of such future cash flows to record the appropriate restructuring charges. Subsequent to the period in which the initial restructuring charge was taken, we record accretion expense to accrete our accrued restructuring liabilities up to an amount equal to the total estimated future cash payments necessary to complete the exit of these leases.

SFAS No. 146 requires us to assume sublease income for these leases and two of these leases extend through 2015. Furthermore, one of these leases currently continues to be unoccupied as it remains a difficult property to market. Therefore, significant and inherently uncertain sublease assumptions were required at the time we recorded these restructuring charges. If we are unable to generate sublease income in the same amount that was projected at the time we recorded the initial restructuring charges, we will need to revise these restructuring charges accordingly. For example, during the years ended December 31, 2007 and 2006, we recorded additional restructuring charges of $407,000 and $1.5 million, respectively, as a result of revised sublease assumptions related to the 2004 restructuring charge. We expect that in the future additional restructuring charge adjustments will recur as we periodically adjust these sublease assumptions to reflect current facts and circumstances. As we continue to assess expansion opportunities, we may decide to use these spaces. If we do, we would have to reverse some of the restructuring charges originally recorded as a result of our prior decision to exit the leases.

Accounting for Income Taxes. Significant management judgment is required in determining our provision for income taxes and whether deferred tax assets will be recoverable in full or in part. We calculate our tax provision in accordance with SFAS No. 109, “Accounting for Income Taxes.” Our estimates and assumptions used in the provision may differ from the actual results as reflected in our income tax returns and we record the required adjustments when they are identified and settled. When it is more likely than not that all or some portion of specific deferred tax assets such as net operating loss carry-forwards will not be realized, a valuation allowance must be established for the amount of the deferred tax assets that are not recoverable. The valuation allowance is determined pursuant to SFAS No. 109 which requires the assessment of both positive and negative evidence. Such assessment should be performed on a jurisdiction-by-jurisdiction basis. We have provided a full valuation allowance against our net deferred tax assets in the U.S. and we intend to maintain the same position for fiscal 2008 based on the assessment of the positive and negative evidence present. As a result of the IXEurope acquisition, we entered into various new jurisdictions in Europe and recorded a significant amount of deferred tax liabilities in certain European jurisdictions attributable to the identifiable intangibles and fixed assets fair value step-up with an increase to goodwill. We believe a full valuation allowance position is necessary in all of our foreign jurisdictions in which there are net deferred tax assets due to the history of losses in these foreign jurisdictions, other than Singapore and Switzerland.

In addition, as evidenced by the issuance of FIN 48, “Accounting for Uncertainty in Income Taxes,” the calculation of tax liabilities involves dealing with the inherent uncertainties in the application of complex tax laws and regulations in various jurisdictions. We are also subject to examinations by various taxing authorities. We believe we have adequately reserved in our financial statements for potential tax liabilities including penalties and interest. If events occur and the payment of the reserved tax liability ultimately proves to be unnecessary, we would reverse the liability and recognize the tax benefit in the period when we determine that the liability is no longer necessary. If, however, it is more likely than not that a reserved liability proves to be less than the ultimate assessment including penalties and interest, a further charge to expense would become necessary.

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Results of Operations

Our results of operations for the year ended December 31, 2007 include the operations of IXEurope from September 14, 2007 to December 31, 2007 as a result of the IXEurope acquisition, which closed on September 14, 2007. As a result, only 109 days of operations are reported from our Europe operations.

Years Ended December 31, 2007 and 2006

Revenues. Our revenues for the years ended December 31, 2007 and 2006 were split between the following revenue classifications (dollars in thousands):

Our revenues for the years ended December 31, 2007 and 2006 were geographically comprised of the following (dollars in thousands):

We recognized revenues of $419.4 million for the year ended December 31, 2007 as compared to revenues of $286.9 million for the year ended December 31, 2006, a 46% increase. We analyze our business geographically between the U.S., Asia-Pacific and Europe as further discussed below.

U.S. Revenues. We recognized U.S. revenues of $324.9 million for the year ended December 31, 2007 as compared to $246.1 million for the year ended December 31, 2006. U.S. revenues consisted of recurring revenues of $311.8 million and $235.4 million, respectively, for the years ended December 31, 2007 and 2006, a 32% increase. The period over period growth in recurring revenues was primarily the result of an increase in orders from both our existing customers and new customers acquired during the period as reflected in the growth in our customer count and utilization rate, as discussed above, in both our new and existing IBX centers, as well as selective price increases in each of our IBX markets. Most notably, we recorded $15.3 million of revenues during the year ended December 31, 2007 from our newly opened IBX centers in the Chicago, New York and Washington, D.C. metro areas. In addition, we recorded a net adjustment of $775,000 to our U.S. recurring revenues as a result of correcting billing errors attributable to prior periods, the net impact of which increased our U.S. recurring revenues for the year ended December 31, 2007. We concluded that the cumulative credit to recurring revenues, totaling $775,000, was not material to any previously-reported historical periods and expected results of operations for the current fiscal year. As such, this cumulative credit was recorded during the three months ended June 30, 2007 and is included in the statement of operations for the year ended December 31, 2007. We expect our U.S. recurring revenues, particularly from colocation and interconnection services, to continue to remain our most significant source of revenue for the foreseeable future.

U.S. revenues also consisted of non-recurring revenues of $13.1 million and $10.7 million, respectively, for the years ended December 31, 2007 and 2006. In addition, during the year ended December 31, 2006, we recorded a reduction of $1.2 million to our non-recurring installation revenues.

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In December 2006, we sold our Honolulu IBX center and, as a result, we no longer recognize revenues from this IBX center. During the year ended December 31, 2006, we recognized $2.3 million of revenue from our Honolulu IBX center, or less than 1% of our total U.S. revenues.

Asia-Pacific Revenues. We recognized Asia-Pacific revenues of $57.0 million for the year ended December 31, 2007 as compared to $40.8 million for the year ended December 31, 2006, a 40% increase. Asia-Pacific revenues consisted of recurring revenues of $52.5 million and $37.8 million, respectively, for the years ended December 31, 2007 and 2006, primarily from colocation and managed infrastructure services. Our Asia-Pacific colocation revenues are similar to the revenues that we generate from our U.S. IBX centers; however, our Singapore IBX center had additional managed infrastructure service revenue, such as mail service (referred to as EMS) and managed platform solutions, which we do not currently offer in any other IBX center location. In December 2007, the EMS service offering was sold and, as a result, subsequent to the sale, we no longer recognize revenue from the EMS service offering. During the year ended December 31, 2007, we recognized $3,473,000 of revenue from the EMS service offering or less than 7% of our total Asia-Pacific revenues. In addition, Asia-Pacific revenues consisted of non-recurring revenues of $4.6 million and $3.0 million, respectively, for the years ended December 31, 2007 and 2006. Asia-Pacific revenues are generated from our IBXs in Hong Kong, Singapore, Sydney and Tokyo, with Singapore representing approximately 35% and 39%, respectively, of the regional revenues for the years ended December 31, 2007 and 2006. The growth in our Asia-Pacific revenues is primarily the result of an increase in the customer base in this region during the past year, particularly in Hong Kong, Sydney and Tokyo. In addition, during the year ended December 31, 2007, we recorded $1.7 million of revenues from our new IBX center in Tokyo, which we acquired in December 2006, and $1.2 million from our new IBX center in Singapore. We expect that our Asia-Pacific revenues will continue to grow; although this growth will be somewhat offset by the loss of revenue as a result of the EMS sale.

Europe Revenues. As a result of the IXEurope acquisition, we recognized revenues of $37.5 million from Europe during the year ended December 31, 2007. We expect our Europe revenues to grow in future periods, both organically and as a result of expansion activity currently taking place in Frankfurt, London and Paris, as well as due to the Virtu acquisition.

Cost of Revenues. Cost of revenues was $263.7 million for the year ended December 31, 2007 as compared to $188.4 million for the year ended December 31, 2007, a 40% increase.

U.S. Cost of Revenues. U.S. cost of revenues was $198.4 million for the year ended December 31, 2007 as compared to $165.4 million for the year ended December 31, 2006. U.S. cost of revenues for the year ended December 31, 2007 included (i) $73.8 million of depreciation and amortization expense, (ii) $3.1 million of accretion expense comprised of our asset retirement obligations and restructuring charges for certain leasehold interests recorded in 2004 and 2005 as we accrete the related liabilities to the total estimated future cash payments needed and (iii) $3.5 million of stock-based compensation. U.S. cost of revenues for the year ended December 31, 2006 included (i) $65.7 million of depreciation and amortization expense, (ii) $3.5 million of accretion expense comprised of our asset retirement obligations and restructuring charges for certain leasehold interests recorded in 2004 and 2005 as we accrete the related liabilities to the total estimated future cash payments needed and (iii) $2.7 million of stock-based compensation. Our U.S. cost of revenues for the year ended December 31, 2007 also included $9.5 million of additional operating costs not incurred in the prior year associated with the recently opened IBX centers in the Chicago, New York and Washington, D.C. metro areas. Excluding depreciation, amortization, accretion, stock-based compensation and the costs associated with operating our new IBX centers, U.S. cost of revenues increased period over period to $96.7 million for the year ended December 31, 2007 from $81.0 million for the year ended December 31, 2006, a 19% increase. This increase was primarily the result of higher compensation costs and increasing utility costs in line with increasing customer installations and revenues attributed to customer growth. We continue to anticipate that our U.S. cost of revenues will increase in the foreseeable future to the extent that the occupancy levels in our U.S. IBX centers increase and as newly-opened IBX centers in the Chicago, Los Angeles, New York, Silicon Valley and Washington, D.C. metro areas commence operations more fully in 2008. However, a portion of our expected

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increase in U.S. cost of revenues will be partially offset by a reduction in rent expense as a result of our Silicon Valley property acquisition. We expect that this savings in rent expense will be approximately $2.0 million annually; however part of the rent savings will be offset by increases in depreciation and property tax expense.

Asia-Pacific Cost of Revenues. Asia-Pacific cost of revenues was $35.1 million for the year ended December 31, 2007 as compared to $23.0 million for the year ended December 31, 2006. Asia-Pacific cost of revenues for the years ended December 31, 2007 and 2006 included $9.5 million and $3.8 million, respectively, of depreciation and amortization expense. Our Asia-Pacific cost of revenues for the year ended December 31, 2007 also included $3.7 million of additional operating costs not incurred in the prior year associated with the recently opened IBX centers in Singapore and Tokyo metro areas. Excluding depreciation, stock-based compensation and the costs associated with operating our new IBX centers, Asia-Pacific cost of revenues increased period over period to $21.2 million for the year ended December 31, 2007 from $18.7 million for the year ended December 31, 2006, a 13% increase. This increase was primarily the result of higher compensation costs and increasing utility and bandwidth costs in line with increasing customer installations and revenues attributed to this customer growth. We anticipate that our Asia-Pacific cost of revenues will increase in the foreseeable future in connection with overall revenue growth and our expansion in the Hong Kong, Singapore, Sydney and Tokyo metro areas.

Europe Cost of Revenues. As a result of the IXEurope acquisition, we incurred additional cost of revenues of $30.2 million from our Europe operations during the year ended December 31, 2007. Europe cost of revenues for the year ended December 31, 2007 included $7.7 million of depreciation and amortization expense. Our Europe cost of revenues will increase in future periods, both organically and as a result of expansion activity currently taking place in Frankfurt, London and Paris, as well as due to the Virtu acquisition.

Sales and Marketing. Sales and marketing expenses increased to $40.7 million for the year ended December 31, 2007 from $32.6 million for the year ended December 31, 2006.

U.S. Sales and Marketing Expenses. U.S. sales and marketing expenses increased to $31.3 million for the year ended December 31, 2007 from $28.0 million for the year ended December 31, 2006. Included in U.S. sales and marketing expenses for the year ended December 31, 2007 and 2006 were $8.2 million and $6.8 million, respectively, of stock-based compensation expense. Excluding stock-based compensation expense, U.S. sales and marketing expenses increased to $23.1 million for the year ended December 31, 2007 as compared to $21.2 million for the year ended December 31, 2006, a 9% increase. This increase was primarily due to (i) approximately $1.0 million of higher compensation costs, including increases in sales compensation related to strong new customer bookings throughout 2007 and general salary increases and bonuses for our marketing staff and non-commissioned sales staff and (ii) approximately $509,000 of higher travel costs related to our customer and revenue growth. We expect U.S. sales and marketing spending to increase as we continue to grow our business and invest in various branding initiatives.

Asia-Pacific Sales and Marketing Expenses. Asia-Pacific sales and marketing expenses increased to $6.4 million for the year ended December 31, 2007 as compared to $4.6 million for the year ended December 31, 2006. Excluding stock-based compensation, Asia-Pacific sales and marketing expenses were $5.8 million for the year ended December 31, 2007 versus $4.0 million for the year ended December 31, 2006, a 45% increase. This increase was primarily due to general salary increases and sales compensation over the prior period associated with the overall growth in this region. We expect that our Asia-Pacific sales and marketing expenses will continue to grow in the foreseeable future.

Europe Sales and Marketing Expenses. As a result of the IXEurope acquisition, we incurred additional sales and marketing expenses of $3.0 million from our Europe operations during the year ended December 31, 2007. Included in Europe sales and marketing expenses for the year ended December 31, 2007 was $1.8 million of intangible asset amortization and stock-based compensation expense. Our Europe sales and marketing expenses are expected to increase in future periods as a result of our effort to drive increased revenue growth in this region, both organic and expansion-related.

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General and Administrative. General and administrative expenses increased to $105.8 million for the year ended December 31, 2007 from $72.1 million for the year ended December 31, 2006.

U.S. General and Administrative Expenses. U.S. general and administrative expenses increased to $83.2 million for the year ended December 31, 2007 as compared to $60.6 million for the year ended December 31, 2006. Included in U.S. general and administrative expenses for the year ended December 31, 2007 were $24.9 million of stock-based compensation expense and $6.9 million of depreciation expense. Included in U.S. general and administrative expenses for the year ended December 31, 2006 were $17.7 million of stock-based compensation expense and $3.0 million of depreciation expense. Excluding stock-based compensation expense and depreciation expense, U.S. general and administrative expenses increased to $51.5 million for the year ended December 31, 2007, as compared to $39.9 million for the same period last year, a 29% increase. This increase was primarily due to (i) approximately $6.2 million of higher cash compensation costs, including increases in general salary and benefits, bonuses and headcount growth (220 U.S. general and administrative employees as of December 31, 2007 versus 175 as of December 31, 2006), (ii) an increase in professional fees of approximately $1.8 million due to an increase in various consulting projects in connection with our growth strategies and (iii) an increase in travel and training expenses of approximately $811,000. Going forward, we expect U.S. general and administrative spending to increase as we continue to scale our operations to support our growth.

Asia-Pacific General and Administrative Expenses. Asia-Pacific general and administrative expenses increased to $14.3 million for the year ended December 31, 2007 as compared to $11.5 million for the year ended December 31, 2006. Included in Asia-Pacific general and administrative expenses for the years ended December 31, 2007 and 2006 were $4.0 million and $2.5 million, respectively, of stock-based compensation. Excluding stock-based compensation and depreciation, Asia-Pacific general and administrative expenses increased to $10.1 million for the year ended December 31, 2007, as compared to $8.8 million for the same period last year, a 15% increase. This increase was primarily due to higher compensation costs, including general salary increases and bonuses. We expect that our Asia-Pacific general and administrative expenses will experience some growth in the foreseeable future.

Europe General and Administrative Expenses. As a result of the IXEurope acquisition, we incurred additional general and administrative expenses of $8.3 million from our Europe operations during the year ended December 31, 2007. Included in Europe general and administrative expenses for the year ended December 31, 2007 was $1.1 million of stock-based compensation and depreciation expense. Our Europe general and administrative expenses are expected to increase in future periods as this region scales to support the anticipated revenue growth in the region and in connection with various integration initiatives related to investments in systems and internal control compliance.

Restructuring Charges. During the year ended December 31, 2007, we recorded an additional restructuring charge of $407,000 as a result of revised sublease assumptions for our excess space lease in the Los Angeles metro area as a result of new information becoming available. During the year ended December 31, 2006, we recorded an additional restructuring charge of $1.5 million as a result of revised sublease assumptions on two of our excess space leases in the New York and Los Angeles metro areas as a result of new information becoming available. The original restructuring charge for these two leases was recorded in the fourth quarter of 2004 and totaled $17.7 million. We are contractually committed to these two leases through 2015.

Gains on Asset Sales. During the year ended December 31, 2007, we recorded a $1.3 million gain in connection with the EMS sale, which we sold for $1.7 million in gross cash proceeds. During the year ended December 31, 2006, we recorded a $9.6 million gain in connection with the sale of our Honolulu IBX center. We sold this IBX center for $9.8 million in gross cash proceeds.

Interest Income. Interest income increased to $15.4 million from $6.6 million for the years ended December 31, 2007 and 2006, respectively. Interest income increased due to higher invested balances during these periods, as well as higher yields on those balances due to increased interest rates. The average annualized

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yield for the year ended December 31, 2007 was 5.08% versus 4.53% for the year ended December 31, 2006. We expect our interest income to decrease for the foreseeable future due to the utilization of our cash to finance our expansion activities and decreasing interest rates.

Interest Expense. Interest expense increased to $27.3 million from $14.9 million for the years ended December 31, 2007 and 2006, respectively. The increase in interest expense was primarily due to new financings entered into during 2006 and 2007: (i) an additional financing of $40.0 million under the Ashburn campus mortgage payable during the three months ended December 31, 2006, which bears interest at 8.0% per annum, (ii) our $110.0 million Chicago IBX financing, which was drawn down during the construction period of the Chicago metro area IBX expansion project, of which $105.6 million was outstanding as of December 31, 2007 with an approximate interest rate of 8.375% per annum, (iii) our $250.0 million 2.50% convertible subordinated notes offering in March 2007, (iv) our approximately $40.0 million Asia-Pacific financing, of which approximately $25.9 million was outstanding as of December 31, 2007 with an approximate blended interest rate of 3.65% per annum, (v) our $396.0 million 3.00% convertible subordinated notes offering in September 2007 and (vi) our approximately $162.9 million European financing, of which $83.5 million was outstanding as of December 31, 2007 with an approximate blended interest rate of 7.74% per annum. This increase was partially offset by the $54.0 million partial conversion of our 2.50% convertible subordinated debentures in March 2007 that resulted in a decrease in interest expense. Although we now have higher debt balances, we are also capitalizing more interest in connection with various construction projects related to our IBX expansion efforts. During the years ended December 31, 2007 and 2006, we capitalized $7.1 million and $1.6 million, respectively, of interest expense to construction in progress. Going forward, we expect to incur higher interest expense as we fully utilize or recognize the full impact of our existing financings to fund our expansion efforts and as we complete expansion efforts and cease to capitalize interest expense.

Other Income (Expense). For the year ended December 31, 2007, we recorded $3.0 million of other income, primarily consisting of a foreign exchange gain of $1.5 million as a result of hedging a portion of the IXEurope acquisition purchase price with forward contracts and a $621,000 foreign exchange gain related to the liquidation of a wholly-owned subsidiary in the Netherlands. As a result, this historical foreign exchange gain of $621,000, accumulated within other comprehensive income associated with this dormant subsidiary, was recognized in our results of operations. For the year ended December 31, 2006, we recorded $245,000 of other expense, which was primarily attributable to foreign currency losses during the period.

Loss on Conversion and Extinguishment of Debt. During the three months ended March 31, 2007, we retired $54.0 million of our convertible subordinated debentures in exchange for approximately 1.4 million newly issued shares of our common stock. As a result, we recorded a $3.4 million loss on debt conversion in accordance with FASB No. 84, “Induced Conversions of Convertible Debt,” due to the inducement fee paid. In September 2007, the senior bridge loan was terminated unused and, as a result, we recorded a $2.5 million loss on debt extinguishment reflecting the immediate write-off of capitalized debt issuance costs to secure the senior bridge loan. During the year ended December 31, 2007, we recognized a total of $5.9 million of loss on debt conversion and extinguishment. During the year ended December 31, 2006, we did not record any loss on conversion or extinguishment of debt in our statements of operations.

Income Taxes. During 2007, we recorded $473,000 of income tax expense primarily attributable to our foreign operations. During 2006, we recorded $439,000 of income tax expense primarily representing U.S. alternative minimum tax and a net tax benefit from our operation in Singapore, which resulted from the release of the valuation allowance in the jurisdiction. We have not incurred any significant income tax expense since inception and we do not expect to incur any meaningful income tax expense during 2008.

Cumulative Effect of a Change in Accounting Principle. As a result of our adoption of SFAS No. 123(R), “Share-Based Payment,” during the year ended December 31, 2006, we recorded a reduction of expense totaling $376,000, which is reflected as a cumulative effect of a change in accounting principle on our statement of operations for this period. This amount reflects the application of an estimated forfeiture rate to partially vested

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employee equity awards as of January 1, 2006 that we accounted for under APB 25, which was primarily for restricted stock awards to our executive officers that were granted during the three months ended March 31, 2005. During the year ended December 31, 2007 no cumulative effect of a change in accounting principle was recorded in our statement of operations.

Years Ended December 31, 2006 and 2005

Revenues. Our revenues for the years ended December 31, 2006 and 2005 were split between the following revenue classifications (dollars in thousands):

Our revenues for the years ended December 31, 2006 and 2005 were geographically comprised of the following (dollars in thousands):

We recognized revenues of $286.9 million for the year ended December 31, 2006 as compared to revenues of $221.1 million for the year ended December 31, 2005, a 30% increase. We analyze our business geographically between the U.S. and Asia-Pacific as further discussed below.

U.S. Revenues. We recognized U.S. revenues of $246.1 million for the year ended December 31, 2006 as compared to $191.4 million for the year ended December 31, 2005. U.S. revenues consisted of recurring revenues of $235.4 million and $180.4 million, respectively, for the years ended December 31, 2006 and 2005, a 30% increase. The period over period growth in recurring revenues was primarily the result of an increase in orders from both our existing customers and new customers acquired during the period as reflected in the growth in our customer count and utilization rate as discussed above, and selective price increases in each of our IBX markets. Most notably, we recorded $7.9 million of revenues from our new IBX centers in the Chicago, Los Angeles and Silicon Valley metro areas, which opened for business during the year ended December 31, 2006.

In addition, U.S. revenues consisted of non-recurring revenues of $10.7 million and $11.0 million, respectively, for the years ended December 31, 2006 and 2005. Included in U.S. non-recurring revenues are settlement fees of $817,000 for the year ended December 31, 2005. There were no such settlement fees for the year ended December 31, 2006. Offsetting some of this non-recurring revenue for the year ended December 31, 2005 were service level credits that we recorded totaling $457,000 that were issued or will be issued to certain of our customers related to two separate power outages in our Chicago and Washington, D.C. metro area IBX centers. There were no significant service level credits recorded in the year ended December 31, 2006. In addition, we recorded a reduction of $1.2 million to our non-recurring installation revenues during the quarter ended December 31, 2006. Excluding settlements and service level credits, U.S. non-recurring revenues, consisting of the recognized portion of deferred installation and professional services, increased 5% period over period, primarily due to strong existing and new customer growth during the year.

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In December 2006, we sold our Honolulu IBX center and, as a result, subsequent to the sale we no longer recognize revenues from this IBX center. During the year ended December 31, 2006, we recognized $2.3 million of revenue from our Honolulu IBX center or less than 1% of our total U.S. revenues.

Asia-Pacific Revenues. We recognized Asia-Pacific revenues of $40.8 million for the year ended December 31, 2006 as compared to $29.7 million for the year ended December 31, 2005, a 38% increase. Asia-Pacific revenues consisted of recurring revenues of $37.8 million and $27.6 million, respectively, for the years ended December 31, 2006 and 2005, consisting primarily of colocation and managed infrastructure services. In addition, Asia-Pacific revenues consisted of non-recurring revenues of $3.0 million and $2.1 million, respectively, for the years ended December 31, 2006 and 2005. Asia-Pacific revenues are generated from Hong Kong, Singapore, Sydney and Tokyo, with Singapore representing approximately 39% and 45%, respectively, of the regional revenues for the years ended December 31, 2006 and 2005. The growth in our Asia-Pacific revenues is primarily the result of an increase in the customer base in this region during the past year, particularly in Hong Kong, Sydney and Tokyo.

Cost of Revenues. Cost of revenues were $188.4 million for the year ended December 31, 2006 as compared to $158.4 million for the year ended December 31, 2005, a 19% increase.

U.S. Cost of Revenues. U.S. cost of revenues was $165.4 million for the year ended December 31, 2006 as compared to $138.3 million for the year ended December 31, 2005. U.S. cost of revenues for the year ended December 31, 2006 included (i) $65.0 million of depreciation expense, (ii) $3.5 million of accretion expense comprised of our asset retirement obligations and restructuring charges for certain leasehold interests recorded in 2004 and 2005 as we accrete the related liabilities to the total estimated future cash payments needed and (iii) $2.7 million of stock-based compensation as a result of our adoption of SFAS 123(R) effective January 1, 2006. U.S. cost of revenues for the year ended December 31, 2005 included (i) $57.1 million of depreciation expense and (ii) $1.9 million of accretion expense comprised of our asset retirement obligations and restructuring charges for certain leasehold interests recorded in 2004 and 2005 as we accrete the related liabilities to the total estimated future cash payments needed. Our U.S. cost of revenues for the year ended December 31, 2006 also included $17.7 million of additional operating costs not incurred in the prior year associated with the recently opened IBX centers in the Chicago, Los Angeles and Silicon Valley metro areas (the Chicago and Los Angeles IBX centers opened for business during the three months ended June 30, 2006, and the Silicon Valley IBX center opened for business during the three months ended September 30, 2006). Excluding depreciation, accretion expense, stock-based compensation, amortization expense and the costs associated with operating our new IBX centers, U.S. cost of revenues increased period over period to $81.0 million for the year ended December 31, 2006 from $77.8 million for the year ended December 31, 2005, a 4% increase. This increase was primarily the result of increases in (i) utility costs of approximately $6.3 million in line with increasing customer installations and revenues attributed to customer growth, (ii) compensation costs of approximately $2.9 million, including general salary increases and bonuses and headcount growth and (iii) repair and maintenance expenses. This increase was partially offset by a reduction of approximately $7.4 million in rent expense in connection with a property we recorded a restructuring charge for in San Jose in the fourth quarter of 2005 and the purchase of the previously leased Ashburn campus property in October 2005. In December 2006, we sold our Honolulu IBX center. During the year ended December 31, 2006, we recorded $1.3 million in costs of revenue for the Honolulu IBX center, representing less than 1% of our total U.S. cost of revenues.

Asia-Pacific Cost of Revenues. Asia-Pacific cost of revenues was $23.0 million for the year ended December 31, 2006 as compared to $20.1 million for the year ended December 31, 2005. Asia-Pacific cost of revenues for the year ended December 31, 2006 and 2005 included $3.5 million and $3.6 million, respectively, of depreciation and amortization expense. Excluding depreciation, stock-based compensation and non-cash rent expense, Asia-Pacific cost of revenues increased period over period to $18.7 million for the year ended December 31, 2006 from $16.3 million for the year ended December 31, 2005, a 15% increase. This increase was primarily the result of increasing utility and bandwidth costs in line with increasing customer installations and revenues attributed to this customer growth.

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Sales and Marketing. Sales and marketing expenses increased to $32.6 million for the year ended December 31, 2006 from $20.6 million for the year ended December 31, 2005.

U.S. Sales and Marketing Expenses. U.S. sales and marketing expenses increased to $28.0 million for the year ended December 31, 2006 from $17.5 million for the year ended December 31, 2005. Included in U.S. sales and marketing expenses for the years ended December 31, 2006 and 2005 were $6.8 million and $1.6 million, respectively, of stock-based compensation expense. The increase in stock-based compensation expense period over period is a result of our adoption of SFAS 123(R) effective January 1, 2006. Excluding stock-based compensation and amortization expense, U.S. sales and marketing expenses increased to $21.1 million for the year ended December 31, 2006 as compared to $15.9 million for the year ended December 31, 2005, a 33% increase. This increase was primarily due to (i) approximately $3.9 million of higher compensation costs, including increases in sales compensation related to strong new customer bookings throughout 2006 and general salary increases and bonuses for our marketing staff and non-commissioned sales staff and (ii) approximately $815,000 of higher travel costs related to our customer and revenue growth.

Asia-Pacific Sales and Marketing Expenses. Asia-Pacific sales and marketing expenses increased to $4.6 million for the year ended December 31, 2006 as compared to $3.1 million for the year ended December 31, 2005. Excluding stock-based compensation, Asia-Pacific sales and marketing expenses were $4.0 million for the year ended December 31, 2006 versus $3.1 million for the year ended December 31, 2005, a 30% increase. This increase was primarily due to higher compensation costs as a result of the strong revenue growth in this region and an increase in bad debt expense.

General and Administrative. General and administrative expenses increased to $72.1 million for the year ended December 31, 2006 from $45.1 million for the year ended December 31, 2005.

U.S. General and Administrative Expenses. U.S. general and administrative expenses increased to $60.6 million for the year ended December 31, 2006 as compared to $37.3 million for the year ended December 31, 2005. Included in U.S. general and administrative expenses for the year ended December 31, 2006 were $17.7 million of stock-based compensation expense and $3.0 million of depreciation expense. Included in U.S. general and administrative expenses for the year ended December 31, 2005 were $6.7 million of stock-based compensation expense and $1.7 million of depreciation expense. The increase in stock-based compensation expense period over period is a result of our adoption of SFAS 123(R) effective January 1, 2006. Excluding stock-based compensation expense and depreciation expense, U.S. general and administrative expenses increased to $39.9 million for the year ended December 31, 2006, as compared to $28.9 million for the same period last year, a 38% increase. This increase was primarily due to (i) approximately $4.4 million of higher compensation costs, including general salary increases, bonuses and headcount growth (175 U.S. general and administrative employees as of December 31, 2006 versus 152 as of December 31, 2005), (ii) an increase in professional fees of approximately $5.0 million due to increased legal fees in connection with our legal matters such as the review of our past stock option grants and practices, accounting fees and other consulting projects in connection with our growth strategies and (iii) increases in rent, repair and maintenance expenses in connection with our office expansion in Foster City, California and travel expenses.

Asia-Pacific General and Administrative Expenses. Asia-Pacific general and administrative expenses increased to $11.5 million for the year ended December 31, 2006 as compared to $7.8 million for the year ended December 31, 2005. Included in Asia-Pacific general and administrative expenses for the years ended December 31, 2006 were $2.5 million of stock-based compensation as a result of our adoption of SFAS 123(R) effective January 1, 2006. Excluding stock-based compensation and depreciation, Asia-Pacific general and administrative expenses increased to $8.8 million for the year ended December 31, 2006, as compared to $7.5 million for the same period last year, a 17% increase. This increase was primarily due to higher compensation costs, including general salary increases and bonuses.

Restructuring Charges. During the year ended December 31, 2006, we recorded an additional restructuring charge of $1.5 million as a result of revised sublease assumptions on two of our excess space leases in the New York and Los Angeles metro areas as a result of new information becoming available.

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During the year ended December 31, 2005, we recorded a restructuring charge of $33.8 million, which we refer to as the 2005 restructuring charge. In light of the availability of fully or partially built-out data centers in the Silicon Valley, including the possibility of expansion in or near some of the four IBX centers we currently have in the Silicon Valley, we made the decision that retaining the approximately 40 acre San Jose ground lease for future expansion was no longer economical. In conjunction with this decision, we entered into an agreement with the landlord of this property for an early termination of the San Jose ground lease whereby we would pay $40.0 million over four years, commencing January 1, 2006, to terminate this lease, which would otherwise require significantly higher cumulative lease payments through 2020. The restructuring charge consisted of (i) a $32.3 million charge representing the present value of our estimated future cash payments to exit this property, which is net of $4.4 million of deferred rent previously accrued for this lease (thereby creating a total restructuring liability of $36.7 million associated with this lease) and (ii) a write-off of property and equipment of $1.5 million representing development costs incurred to date to prepare this land for use. We expect, as a result of this restructuring charge, we will realize annual savings in cost of revenues of approximately $5.6 million. For further detailed information on our restructuring charges, see Note 15 of our “Notes to Consolidated Financial Statements” in Item 8 of this Annual Report on Form 10-K.

Gains on Asset Sales. During the year ended December 31, 2006, we recorded a $9.6 million gain in connection with the sale of our Honolulu IBX center.

Interest Income. Interest income increased to $6.6 million from $3.6 million for the years ended December 31, 2006 and 2005, respectively. Interest income increased due to higher invested balances during these periods, as well as higher yields on those balances due to increased interest rates. The average annualized yield for the year ended December 31, 2006 was 4.53% versus 3.32% for the year ended December 31, 2005.

Interest Expense. Interest expense increased to $14.9 million from $8.9 million for the years ended December 31, 2006 and 2005, respectively. The increase in interest expense was primarily due to increases in interest expense associated with the new financings entered into during 2006 and 2005: (i) the $9.7 million financing for equipment we purchased in connection with our Chicago IBX acquisition in November 2005, which bears interest at 7.50%; (ii) the $38.1 million financing in connection with our Los Angeles IBX financing in December 2005, which bears interest at 7.75%; and (iii) the $100.0 million mortgage payable, which bears interest at 8.00%, in connection with our Ashburn campus financing, of which $60.0 million was borrowed in December 2005 and the remaining $40.0 million was borrowed in December 2006. This increase was partially offset by the debt conversion activities during the fiscal year 2005 that resulted in a decrease in interest expense. In November 2005, STT Communications converted the remaining 5% of the outstanding 14% convertible secured notes and unpaid interest totaling $2.2 million into 240,578 shares of our preferred stock, which was immediately converted into 240,578 shares of our common stock. Furthermore, in connection with various construction projects related to our IBX expansion efforts during the year ended December 31, 2006, we capitalized $1.6 million of interest expense to construction in progress. We did not capitalize any interest during the year ended December 31, 2005 as no material amounts of interest qualified for capitalization.

Other Income (Expense). For the year ended December 31, 2006, we recorded $245,000 of other expense, which was primarily attributable to foreign currency losses during the period. For the year ended December 31, 2005, we recorded $25,000 of other income, which was primarily attributable to foreign currency gains during the period.

Income Taxes. During fiscal 2006, we recorded $439,000 of income tax provision primarily representing U.S. alternative minimum tax and a net tax benefit from our operation in Singapore, which resulted from the release of the valuation allowance in the jurisdiction. During fiscal 2005, we recorded $543,000 of income tax provision consisting of U.S. alternative minimum tax and foreign income tax. A valuation allowance is recorded against the net deferred tax assets in all the jurisdictions other than Singapore as management could not conclude, based on the available objective evidence including recurring historical losses, that it is more likely than not the deferred tax assets are recoverable in future years. However, management believed that as of December 31, 2006, it was more likely than not that the deferred tax assets would be fully recoverable in Singapore, as the positive evidence present in the jurisdiction was sufficient to overcome the negative evidence.

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Cumulative Effect of a Change in Accounting Principle. As a result of our adoption of SFAS No. 123(R), “Share-Based Payment,” during the year ended December 31, 2006, we recorded a reduction of expense totaling $376,000, which is reflected as a cumulative effect of a change in accounting principle on our statement of operations for this period. This amount reflects the application of an estimated forfeiture rate to partially vested employee equity awards as of January 1, 2006 that we accounted for under APB 25, which was primarily for restricted stock awards to our executive officers that were granted during the three months ended March 31, 2005.

Liquidity and Capital Resources

As of December 31, 2007, our total indebtedness was comprised of (i) convertible debt totaling $678.2 million from our convertible subordinated debentures, our 2.50% convertible subordinated notes and our 3.00% convertible subordinated notes as outlined below and (ii) non-convertible debt and financing obligations totaling $427.9 million from our various capital leases, Ashburn campus mortgage payable, Chicago IBX financing, Asia-Pacific financing, European financing, other note payable and other financing obligations as outlined below.

We believe we have sufficient cash, coupled with anticipated cash generated from operating activities and anticipated cash from financings, to meet our operating requirements for at least the next 12 months. As of December 31, 2007, we had $383.9 million of cash, cash equivalents and short-term and long-term investments. As of December 31, 2007, we had a total of $159.9 million of additional liquidity available to us in the event we need additional cash to fund expansion activities, fund working capital requirements or pursue attractive strategic opportunities that may become available in the future, which was comprised of (i) $4.4 million under the Chicago IBX financing for the Chicago metro area IBX expansion project, (ii) $62.0 million under the $75.0 million Silicon Valley bank revolving credit line, (iii) $14.1 million under the Asia-Pacific financing for expansion projects in Singapore and Tokyo and (iv) $79.4 million under the European financing for general working capital and expansion projects in Europe. In addition, from time to time we assess external financing opportunities, both debt and equity, as alternative sources for financing such activities and opportunities, including any acquisition plans. While we expect that our cash flow from operations will continue to increase, we expect our cash flow used in investing activities, primarily as a result of our expected purchases of property and equipment to complete our announced expansion projects, will also increase and we expect our cash flow used in investing activities to be greater than our cash flows generated from operating activities. Given our limited operating history, additional potential expansion opportunities that we may decide to pursue and other business risks that may cause our operating results to fluctuate, we may not achieve our desired levels of profitability or cash requirements in the future. For further information, refer to “Risk Factors” in Item 1A of this Annual Report on Form 10-K above.

Sources and Uses of Cash

Net cash provided by our operating activities was $120.0 million, $75.4 million and $67.6 million for the years ended December 31, 2007, 2006 and 2005, respectively. This increase was primarily due to improved operating results; however, these improved operating results were offset by growth in accounts receivables and additional restructuring charge payments as a result of our 2005 and 2004 restructuring charges. While our customer collections have remained very strong, as a result of our revenue growth and customer installation activity, our accounts receivables have also grown, impacting the growth of our cash flow from operations. While this increased level of accounts receivables and restructuring charge payments have had an impact on our ability to grow our cash from operating activities, we expect that we will continue to generate cash from our operating activities throughout 2008 and beyond.

Net cash used in investing activities was $1.1 billion, $158.5 million and $108.7 million for the years ended December 31, 2007, 2006 and 2005, respectively. Net cash used in investing activities for the year ended December 31, 2007 was primarily the IXEurope acquisition in September 2007 for $541.7 million, the result of the capital expenditures required to bring our recently announced and current IBX expansion projects to Equinix standards, and to support our growing customer base, the purchase of our San Jose IBX property and an adjacent

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piece of land in July and August 2007 totaling $71.5 million, and the purchase of our Los Angeles IBX property in June 2007 for $49.1 million, partially offset by net maturities and sales of our short-term investments. Net cash used in investing activities for the year ended December 31, 2006 was primarily the result of the capital expenditures required to bring our recently opened IBX centers in the Chicago, Los Angeles and Silicon Valley metro areas to Equinix standards, the Washington, D.C., Chicago, New York and Tokyo metro area IBX expansion projects and to support our growing customer base, as well as the net purchases of $3.5 million of our short-term and long-term investments and the purchase of our Chicago IBX property in June 2006 for $9.8 million, offset by the proceeds from the sale of our Honolulu IBX in December 2006 of $9.5 million. Net cash used in investing activities during the year ended December 31, 2005 was primarily the result of the purchases of the Los Angeles IBX and Ashburn campus properties for $34.7 million and $53.8 million, respectively, and capital expenditures required to bring our recently acquired IBX centers in the Washington, D.C., Silicon Valley, Chicago and Los Angeles metro areas to Equinix standards and to support our growing customer base offset by the net sales and maturities of short-term and long-term investments of $12.2 million. For 2008 and beyond, we anticipate that our cash used in investing activities, excluding the purchases, sales and maturities of short-term and long-term investments, will primarily be for our capital expenditures, which we expect to be substantial, as well as for additional purchases of real estate or acquisitions like the Virtu acquisition in February 2008 that we may undertake in the future.

Net cash provided by financing activities was $1.1 billion, $46.1 million and $134.6 million for the years ended December 31, 2007, 2006 and 2005, respectively. Net cash provided by financing activities for the year ended December 31, 2007 was primarily the result of $646.0 million in gross proceeds from our convertible debt offerings, $149.6 million in gross proceeds from our loans payable in connection with the Chicago IBX financing, the Asia-Pacific financing and the European financing, $339.9 million in net proceeds from our common stock offering and $36.4 million in proceeds from our various employee stock plans, partially offset by debt issuance costs and principal payments for our capital leases and other financing obligations and the Ashburn campus mortgage payable. Net cash provided by financing activities for the year ended December 31, 2006 was primarily due to the $40.0 million borrowing under the $75.0 million Silicon Valley Bank revolving credit line in September 2006, the $40.0 million additional financing under the Ashburn campus mortgage payable in December 2006 and proceeds from our various employee stock plans, partially offset by the repayment of $70.0 million in borrowings under the $75.0 million Silicon Valley Bank revolving credit line and principal payments of $2.6 million for our capital lease and other financing obligations and the Ashburn campus mortgage payable. Net cash generated by financing activities for the year ended December 31, 2005 was primarily the result of proceeds of $30.0 million from our borrowing on the $50.0 million Silicon Valley Bank revolving credit line in October 2005, which we repaid in full in January 2006, proceeds of $60.0 million from our Ashburn campus financing in December 2005, proceeds of $38.1 million from our Los Angeles IBX financing and proceeds from the exercises of warrants and various employee stock plans, offset primarily by principal payments of $5.5 million for our various capital lease and other financing obligations.

Debt Obligations—Convertible Debt

Convertible Subordinated Debentures. During February 2004, we sold $86.3 million in aggregate principal amount of 2.50% convertible subordinated debentures due 2024, convertible into 2.2 million shares of our common stock, to qualified institutional buyers. The interest on the convertible subordinated debentures is payable semi-annually every February 15th and August 15th, which commenced August 2004. In March 2007, we entered into agreements with certain holders of these convertible subordinated debentures to exchange an aggregate of 1.4 million newly issued shares of our common stock for such holders’ $54.0 million of $86.3 million principal amount of the convertible subordinated debentures. The number of shares of common stock issued equals the amount issuable upon conversion of the convertible subordinated debentures in accordance with their original terms. In addition, each holder received cash consideration equal to accrued and unpaid interest through the redemption date totaling $110,000, as well as the present value of future interest due through February 15, 2009 and an incremental fee, totaling $3.4 million, as an inducement fee.

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Holders of the convertible subordinated debentures that remain outstanding may require us to purchase all or a portion of their debentures on February 15, 2009, February 15, 2014 and February 15, 2019, in each case at a price equal to 100% of the principal amount of the debentures plus any accrued and unpaid interest. At this time, holders of the convertible subordinated debentures may convert their debentures into shares of our common stock at any time at the option of the holder. We may redeem all or a portion of the debentures at any time after February 15, 2009 at a redemption price equal to 100% of the principal amount of the debentures plus any accrued and unpaid interest.

As of December 31, 2007, a total of $32.3 million convertible subordinated debentures remained outstanding and were convertible into 816,457 shares of our common stock.

2.50% Convertible Subordinated Notes. In March 2007, we issued $250.0 million in aggregate principal amount of 2.50% convertible subordinated notes due 2012. The initial conversion rate is 8.9259 shares of common stock per $1,000 principal amount of convertible subordinated notes, subject to adjustment. This represents an initial conversion price of approximately $112.03 per share of common stock or 2.2 million shares of our common stock. Upon conversion, holders will receive, at our election, cash, shares of our common stock or a combination of cash and shares of our common stock. We have used the net proceeds from this offering for general corporate purposes, including the funding of our expansion activities and working capital requirements.

Holders of the 2.50% convertible subordinated notes may convert their notes upon certain defined circumstances, including during any fiscal quarter (and only during that fiscal quarter) ending after June 30, 2007, if the sale price of our common stock, for at least 20 trading days during the period of 30 consecutive trading days ending on the last trading day of the previous fiscal quarter, is greater than 130% of the conversion price per share of common stock on such last trading day, presently $145.64 per share. In addition, holders of the 2.50% convertible subordinated notes may convert their individual notes at any time on or after March 15, 2012.

We may redeem all or a portion of the 2.50% convertible subordinated notes at any time after April 16, 2010 for cash but only if the closing sale price of our common stock for at least 20 of the 30 consecutive trading days immediately prior to the day we give notice of redemption is greater than 130% of the applicable conversion price per share of common stock on the date of the notice, presently $145.64 per share. The redemption price will equal 100% of the principal amount of the convertible subordinated notes, plus accrued and unpaid interest, if any, to, but excluding, the date of redemption.

Upon conversion, due to the conversion formulas associated with the 2.50% convertible subordinated notes, if our stock is trading at levels exceeding 130% of the conversion price per share of common stock, and if we elect to pay any portion of the consideration in cash, additional consideration beyond the $250.0 million of gross proceeds received would be required. However, in no event would the total number of shares issuable upon conversion of the 2.50% convertible subordinated notes exceed 11.6036 per $1,000 principal amount of convertible subordinated notes, subject to anti-dilution adjustments, or the equivalent of $86.18 per share of common stock or a total of 2.9 million shares of our common stock. As of December 31, 2007, the 2.50% convertible subordinated notes were convertible into 2.2 million shares of our common stock.

3.00% Convertible Subordinated Notes. In September 2007, we issued $396.0 million aggregate principal amount of 3.00% Convertible Subordinated Notes due October 15, 2014. Interest is payable semi-annually on April 15 and October 15 of each year, commencing April 15, 2008.

Holders of the 3.00% convertible subordinated notes may convert their notes at their option on any day up to and including the business day immediately preceding the maturity date into shares of our common stock. The base conversion rate is 7.436 shares of common stock per $1,000 principal amount of 3.00% convertible subordinated notes, subject to adjustment. This represents a base conversion price of approximately $134.48 per share of common stock. If, at the time of conversion, the applicable stock price of our common stock exceeds the base conversion price, the conversion rate will be determined pursuant to a formula resulting in the receipt of up

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to 4.4616 additional shares of common stock per $1,000 principal amount of the 3.00% convertible subordinated notes, subject to adjustment. However, in no event would the total number of shares issuable upon conversion of the 3.00% convertible subordinated notes exceed 11.8976 per $1,000 principal amount of 3.00% convertible subordinated notes, subject to anti-dilution adjustments, or the equivalent of $84.05 per share of our common stock or a total of 4.7 million shares of our common stock. As of December 31, 2007, the 3.00% convertible subordinated notes were convertible into 2.9 million shares of our common stock.

Debt Obligations—Non-Convertible Debt

Washington D.C. Metro Area IBX Capital Lease. In April 2004, we entered into a long-term lease for a 95,000 square foot data center in the Washington, D.C. metro area. The center is adjacent to our existing Washington D.C. metro area IBX center. This lease, which includes the leasing of all of the IBX plant and machinery equipment located in the building, is a capital lease. We took possession of this property during the fourth quarter of 2004, and as a result, recorded property and equipment assets, as well as a capital lease obligation, totaling $35.3 million. Payments under this lease will be made monthly through October 2019 at an effective interest rate of 8.50% per annum. As of December 31, 2007, principal of $32.7 million remained outstanding under this capital lease.

San Jose IBX Equipment and Fiber Financing. In December 2004, we entered into a long-term lease for a 103,000 square foot data center in San Jose, and at the same time entered into separate agreements to purchase the equipment located within this new IBX center and to interconnect all three of our Silicon Valley area IBX centers to each other through redundant dark fiber links. Under U.S. generally accepted accounting principles, these three separate agreements are considered to be a single arrangement. Furthermore, while the building component of this transaction is classified as a long-term operating lease, the equipment and fiber portions of the transaction are classified as financed assets. We took possession of this property during the first quarter of 2005, and as a result, recorded property and equipment and prepaid fiber assets, as well as a financing obligation, totaling $18.7 million. Payments under this financing obligation will be made monthly through May 2020 at an effective interest rate of 8.50% per annum. As of December 31, 2007, principal of $14.5 million remained outstanding under this financing obligation.

Chicago IBX Equipment Financing. In July 2005, we entered into a long-term sublease for a 107,000 square foot data center in Chicago, and at the same time entered into a separate agreement to purchase the equipment located within this IBX center. Under U.S. generally accepted accounting principles, these two separate agreements are considered to be a single arrangement. Furthermore, while the building component of this transaction is classified as a long-term operating lease, the equipment portion of the transaction is classified as financed assets. We took possession of this property and title to the equipment assets in November 2005, and as a result, recorded IBX equipment assets, as well as a financing obligation, totaling $9.7 million at that time. Payments under this financing obligation will be made monthly through August 2015 at an effective interest rate of 7.50% per annum. As of December 31, 2007, principal of $7.5 million remained outstanding under this financing obligation.

Los Angeles IBX Financing. In September 2005, we purchased a 107,000 square foot data center in the Los Angeles metro area for $34.7 million, which we paid for in full with cash in September 2005. In October 2005, we entered into a purchase and sale agreement to sell this Los Angeles IBX for $38.7 million and to lease it back from the purchaser pursuant to a long-term lease, which closed in December 2005, and we received net proceeds from the sale of this property of $38.1 million. However, due to our continuing involvement in regards to certain aspects of this property, the sale and leaseback of this property does not qualify as a sale-leaseback under U.S. generally accepted accounting principles, but rather is accounted for as a financing of the property. We refer to this portion of the transaction as the Los Angeles IBX financing. Pursuant to the Los Angeles IBX financing, we recorded a financing obligation liability totaling $38.1 million in December 2005. Payments under the Los Angeles IBX financing will be made monthly through December 2025 at an effective interest rate of 7.75% per annum. As of December 31, 2007, principal of $37.9 million remained outstanding under this financing obligation.

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Ashburn Campus Mortgage Payable. In December 2005, we completed the financing of our October 2005 purchase of the Ashburn campus property with a $60.0 million mortgage to be amortized over 20 years. Upon receipt of the $60.0 million of cash in December 2005, we recorded a $60.0 million mortgage payable. Payments under the Ashburn campus mortgage payable will be made monthly through January 2026 at an effective interest rate of 8.1% per annum. In December 2006, we obtained an additional financing of $40.0 million under the Ashburn campus mortgage payable, which increased the total amount financed under the Ashburn campus mortgage payable to $100.0 million, on the same terms as the initial mortgage payable. As of December 31, 2007, principal of $96.7 million remained outstanding under this mortgage payable.

$75.0 Million Silicon Valley Bank Revolving Credit Line. In August 2006, we amended the Silicon Valley Bank credit line by entering into a $75.0 million revolving line of credit agreement with Silicon Valley Bank, replacing the previously outstanding $50.0 million line of credit arrangement, and adding General Electric Capital Corporation (GE) as a lender. The $75.0 million Silicon Valley Bank revolving credit line allows for issuance of letters of credit (in addition to revolving borrowings), which has the effect of reducing the amount available for borrowing under the $75.0 million Silicon Valley Bank revolving credit line (the letters of credit sublimit). The $75.0 million Silicon Valley Bank revolving credit line also has an option for us to increase the amount of the line to $100.0 million at a later date, subject to approval of the lender or lenders electing to participate in such increase. In March 2007, we amended certain provisions of the Silicon Valley Bank revolving credit line which related to certain financial covenants, the addition of a liquidity covenant and the revision of the definition of “Approved Subordinated Debt” in order to allow us to proceed with the 2.50% convertible subordinated notes offering. The liquidity covenant requires us to maintain total liquidity of at least $75.0 million. The liquidity covenant is defined as the sum of cash, cash equivalents, short term investments, 80% of long term investments and 10% of net accounts receivable. In the event of a default, Silicon Valley Bank has the right to exercise a notice of control to give Silicon Valley Bank the sole right to control, direct or dispose of the assets as it deems necessary to satisfy our obligations under the Silicon Valley Bank Credit Line, if any. In October 2007, we further amended certain provisions of the Silicon Valley Bank revolving credit line which related to certain financial covenants and the definition of “Designation of Obligations” to include our 3.00% convertible subordinated notes offering that closed on September 26, 2007.

As of December 31, 2007, we were in compliance with all financial covenants in connection with the $75.0 million Silicon Valley Bank revolving credit line. Borrowings under the $75.0 million Silicon Valley Bank revolving credit line, if drawn, will bear interest at variable interest rates, plus the applicable margins, which were in effect prior to the amendments, based on either prime rates or LIBOR rates. The $75.0 million Silicon Valley Bank revolving credit line matures on September 15, 2008 and remains secured by substantially all of our domestic personal property assets and certain of our real property leases. As of December 31, 2007, we had a total of $13.0 million of outstanding letters of credit under the letters of credit sublimit of the $75.0 million Silicon Valley Bank revolving credit line reducing the amount of borrowings available to us to $62.0 million. These letters of credit automatically renew in successive one-year periods until the final termination. If the beneficiaries of these letters of credit decide to draw down on these letters of credit, we will be required to fund these letters of credit either through cash collateral or borrowings under the $75.0 million Silicon Valley Bank revolving credit line. However, no borrowings were outstanding under the $75.0 million Silicon Valley Bank revolving credit line. As of December 31, 2007, had we borrowed against the Silicon Valley Bank revolving credit line, such borrowings would have had an approximate interest rate of 7.35% per annum.

Chicago IBX Financing. In February 2007, our wholly-owned subsidiary obtained a loan of up to $110.0 million to finance up to 60% of the development and construction costs of the Chicago metro area IBX expansion project, which we refer to as the Chicago IBX financing. Funds are advanced at up to 60% of project costs incurred. As of December 31, 2007, we had received advances representing a loan payable totaling $105.6 million. As a result, up to $4.4 million remained available for borrowing from the Chicago IBX financing and is expected to be borrowed during the first quarter of 2008. The loan payable has a maturity date of January 31, 2010, with options to extend for up to an additional two years, in one-year increments, upon satisfaction of certain extension conditions. The loan payable bears interest at a floating rate (one, three or six month LIBOR

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plus 2.75%) with interest payable monthly, which commenced March 1, 2007. As of December 31, 2007, the loan payable had an approximate interest rate of 7.56% per annum. The Chicago IBX financing has no specific financial covenants and contains a limited parent company guaranty. In February 2008, we received additional advances totaling $1.7 million, bringing the cumulative loan payable to date to $107.3 million with an approximate blended interest rate of 6.08% per annum.

Asia-Pacific Financing. In August 2007, our two wholly-owned subsidiaries, located in Singapore and Tokyo, Japan, entered into an approximately $40.0 million multi-currency credit facility agreement. The Asia-Pacific financing has a four-year term that allows these two subsidiaries to borrow up to 23.0 million Singapore dollars and 2.9 billion Japanese yen, respectively, during the first 12-month period with repayment to occur over the remaining three years in 12 equal quarterly installments. Amounts undrawn at the end of the first 12-month period shall be cancelled. The Asia-Pacific financing has a commitment fee of 0.3% on unutilized amounts during the 12-month draw period and bears interest at a floating rate (the relevant three-month local cost of funds for Singapore and Japan), as applicable, plus 1.85%-2.50% depending on the ratio of our senior indebtedness to our earnings before interest, taxes, depreciation and amortization, or EBITDA, with interest payable quarterly. The Asia-Pacific financing may be used by these two subsidiaries to fund capital expenditures on leasehold improvements, equipment, and other installation costs related to expansion plans in Singapore and Tokyo. The Asia-Pacific Financing is guaranteed by the parent company and is secured by the assets of these two subsidiaries, including a pledge of their shares, and has several financial covenants, with which we must comply quarterly. As of December 31, 2007, we borrowed 18.3 million Singapore dollars at an initial interest rate per annum of 4.66% and 1.5 billion Japanese yen at an initial interest rate per annum of 2.69%. Collectively the amounts borrowed equal $25.9 million leaving $14.1 million available to borrow under the Asia-Pacific financing. As of December 31, 2007, we were in compliance with all financial covenants in connection with the Asia-Pacific financing. In January 2008, the Asia-Pacific financing was amended to allow our subsidiary in Australia to borrow up to 32.0 million Australian dollars under the same general terms described above. This amendment increased the Asia-Pacific financing to approximately $68.0 million.

European Financing. In September 2007, as a result of the IXEurope acquisition, our wholly-owned subsidiary acquired a senior facilities agreement totaling 82.0 million British pounds (or approximately $162.9 million as translated using effective exchange rates as of December 31, 2007). The European financing is comprised of three facilities: (i) Facility A, which is available to draw upon through March 2008, provides for a term loan of up to 40.0 million British pounds and bears a floating interest rate per annum of between 1.00% and 2.25% above LIBOR or EURIBOR; (ii) Facility B, which is available to draw upon through June 2010, provides for a term loan of up to 40.0 million British pounds and bears a floating interest rate per annum of between 1.00% and 2.25% above LIBOR or EURIBOR and (iii) Facility C, which is available to draw upon through May 2014, provides for a revolving credit facility of up to 2.0 million British pounds and bears a floating interest rate per annum of between 0.875% and 2.125% above LIBOR or EURIBOR. The European financing has a final maturity date of June 30, 2014 and interest is payable in periods of one, two, three or six months at our election. Facility A will be repaid in 13 semi-annual installments commencing June 30, 2008. Facility B will be repaid in nine semi-annual installments commencing June 30, 2010. Facility C will be repaid at the final maturity date. The European financing is available to fund our subsidiary’s current or future operations in Europe, including capital expenditures, for certain pre-approved subsidiaries in Europe. The European financing is collateralized by certain of our assets in Europe and contains several financial covenants with which we must comply quarterly. As of December 31, 2007, we were in compliance with all financial covenants in connection with the European financing.

Upon a written request from us at any time after December 31, 2007 and through the final maturity date, and upon approval by the lenders, an additional term loan of up to 15.0 million British pounds (or approximately $29.8 million as translated using effective exchange rates as of December 31, 2007) may be made available to us. The European financing requires us to hedge the floating interest rates inherent in the European financing. As a result, we have two interest rate swaps outstanding in connection with the European financing, which are accounted for under the provisions of SFAS No., 133 “Accounting for Derivative Instruments and Hedging Activities”, as amended. As of December 31, 2007, we had borrowed a total of 42.0 million British pounds (or

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approximately $83.6 million as translated using effective exchange rates as of December 31, 2007) under the European financing at a blended interest rate of 7.74% per annum leaving 40.0 million British pounds (or approximately $79.3 million as translated using effective exchange rates as of December 31, 2007) available to borrow under the European financing. In January 2008, we received additional advances totaling 7.7 million British pounds or approximately $15.2 million, bringing the cumulative loan payable to date to 49.7 million British pounds or approximately $98.8 million with a blended interest rate of 7.39% per annum.

Senior Bridge Loan. In June 2007, we entered into a senior bridge loan with Citibank, N.A., as lender, and as agent for the lender, for a principal amount of $500.0 million, to finance our IXEurope acquisition. We incurred $2.5 million of debt issuance costs to secure the senior bridge loan. In September 2007, the senior bridge loan was terminated unused and, as a result, we incurred a loss on debt extinguishment of $2.5 million reflecting the immediate write-off of debt issuance costs previously capitalized.

Other Note Payable. In December 2007, we reclassified a total of $18.7 million of accrued restructuring liability related to the 2005 restructuring charge to other note payable. The other note payable is a non-interest bearing note but has an imputed interest rate of 6.14% per annum. Payments under the other note payable are payable quarterly and will be payable through the fourth quarter of 2009.

Debt Maturities, Financings, Leases and Other Contractual Commitments

We lease our IBX centers and certain equipment under non-cancelable lease agreements expiring through 2027. The following represents our debt maturities, financings, leases and other contractual commitments as of December 31, 2007 (in thousands):

Primarily as a result of our various IBX expansion projects, as of December 31, 2007, we were contractually committed for $100.1 million of unaccrued capital expenditures, primarily for IBX equipment not yet delivered and labor not yet provided, in connection with the work necessary to open these IBX centers prior to making them available to customers for installation. This amount, which is expected to be paid during 2008, is reflected in the table above as “other contractual commitments.”

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We have other, non-capital purchase commitments in place as of December 31, 2007, such as commitments to purchase power in select locations, primarily in the U.S., Singapore and the United Kingdom, through 2008 and thereafter, and other open purchase orders, which contractually bind us for goods or services to be delivered or provided during 2008. Such other purchase commitments as of December 31, 2007, which total $37.2 million, are also reflected in the table above as “other contractual commitments.”

In addition, although we are not contractually obligated to do so, we expect to incur additional capital expenditures beyond the $100.1 million contractually committed as of December 31, 2007 in our various IBX expansion projects during 2008 of approximately $150.0 million to $200.0 million in order to complete the work needed to open these IBX centers. These non-contractual capital expenditures are not reflected in the table above.

As previously discussed above, in connection with six of our IBX operating leases and one utilities contract, we have entered into seven irrevocable letters of credit totaling $13.0 million with Silicon Valley Bank, provided in lieu of cash deposits under the letters of credit sublimit provision of the $75.0 million Silicon Valley Bank revolving credit line. If the beneficiaries of these letters of credit decide to draw down on these letters of credit, we will be required to fund these letters of credit either through cash collateral or borrowings under the Silicon Valley Bank revolving credit line. These contingent commitments are not reflected in the table above.

Recent Accounting Pronouncements

In September 2006, the FASB issued SFAS No. 157, “Fair Value Measurements” (“SFAS 157”). SFAS No. 157 defines fair value, establishes a framework for measuring fair value under GAAP, and expands disclosures about fair value measurements. SFAS No. 157 is effective for fiscal years beginning after December 15, 2007. . In February 2008, the FASB issued FSP FAS 157-1, which provides supplemental guidance on the application of SFAS No. 157, and FSP FAS 157-2, which delays the effective date of SFAS No. 157 for nonfinancial assets and nonfinancial liabilities. We are currently in the process of evaluating the impact that the adoption of SFAS No. 157 will have on our financial position, results of operations and cash flows.

In February 2007, the FASB issued SFAS No. 159, “The Fair Value Option for Financial Assets and Financial Liabilities” (“SFAS No. 159”). SFAS No. 159 permits companies to choose to measure, on an instrument-by-instrument basis, many financial instruments and certain other assets and liabilities at fair value that are not currently required to be measured at fair value. SFAS No. 159 is effective as of the beginning of a fiscal year that begins after November 15, 2007. While we will not elect to adopt fair value accounting to any assets or liabilities allowed by SFAS No. 159, we are currently still in the process of evaluating SFAS No. 159 and its potential impact to us.

In December 2007, the FASB issued SFAS No. 141 (revised 2007), “Business Combinations” (“SFAS No. 141(R)”). SFAS No. 141(R) replaces SFAS No. 141, “Business Combinations.” SFAS 141(R) establishes principles and requirements for how an acquirer recognizes and measures in its financial statements the identifiable assets acquired, the liabilities assumed, any noncontrolling interest in the acquiree and the goodwill acquired or a gain from a bargain purchase. SFAS No. 141R also determines disclosure requirements to enable the evaluation of the nature and financial effects of the business combination. SFAS No. 141(R) applies prospectively to business combinations for which the acquisition date is on or after the beginning of a fiscal year that begins on or after December 15, 2008 and there are also implications for acquisitions that occur prior to this date. We are currently in the process of evaluating the impact that the adoption of SFAS No. 141(R) will have on our financial position, results of operations and cash flows.

In December 2007, the FASB issued SFAS No. 160, “Noncontrolling Interests in Consolidated Financial Statements” (“SFAS No. 160”). SFAS No. 160 amends ARB 51, Consolidated Financial Statements, and requires all entities to report noncontrolling (minority) interests in subsidiaries within equity in the consolidated financial statements, but separate from the parent shareholders’ equity. SFAS No. 160 also requires any acquisitions or dispositions of noncontrolling interests that do not result in a change of control to be accounted for as equity

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transactions. Further, SFAS No. 160 requires that a parent recognize a gain or loss in net income when a subsidiary is deconsolidated. SFAS No. 160 is effective for fiscal years beginning on or after December 15, 2008. We are currently in the process of evaluating the impact that the adoption of SFAS No. 160 will have on our financial position, results of operations and cash flows, if any.

Market Risk

The following discussion about market risk involves forward-looking statements. Actual results could differ materially from those projected in the forward-looking statements. We may be exposed to market risks related to changes in interest rates and foreign currency exchange rates and fluctuations in the prices of certain commodities, primarily electricity.

Interest Rate Risk

Our exposure to market risk resulting from changes in interest rates relates primarily to our investment portfolio. See Note 5 of Notes to the Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K. All of our cash equivalents and marketable securities are designated as available-for-sale and are therefore recorded at fair market value on our condensed consolidated balance sheets with the unrealized gains or losses reported as a separate component of other comprehensive income or loss. We consider various factors in determining whether we should recognize an impairment charge for our securities, including the length of time and extent to which the fair value has been less than our cost basis and our intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value. The fair market value of our marketable securities could be adversely impacted due to a rise in interest rates, but we do not believe such impact would be material. Securities with longer maturities are subject to a greater interest rate risk than those with shorter maturities and as of December 31, 2007 our weighted-average portfolio maturity was relatively short. If current interest rates were to increase or decrease by 10% from their position as of December 31, 2007, the fair market value of our investment portfolio could increase or decrease by approximately $249,000.

An immediate 10% increase or decrease in current interest rates from their position as of December 31, 2007 would furthermore not have a material impact on our debt obligations due to the fixed nature of the majority of our debt obligations. The interest expense associated with our Chicago IBX financing, Asia-Pacific financing and European financing, which bear interest at floating rates tied to local cost of funds or LIBOR/EURIBOR, could be affected. For every 100 basis point change in interest rates, our interest expense could increase or decrease by a total of $2.1 million based on the total balance of our borrowings under the Chicago IBX financing, Asia-Pacific financing and European financing as of December 31, 2007.

The fair market value of our long-term fixed interest rate debt is subject to interest rate risk. Generally, the fair market value of fixed interest rate debt will increase as interest rates fall and decrease as interest rates rise. These interest rate changes may affect the fair market value of the fixed interest rate debt but do not impact our earnings or cash flows. The fair market value of our convertible subordinated debentures and convertible subordinated notes is based on quoted market prices. The estimated fair value of our convertible subordinated debentures at December 31, 2007 was approximately $83.7 million. The estimated fair value of our 2.50% convertible subordinated notes at December 31, 2007 was approximately $284.3 million. The estimated fair value of our 3.00% convertible subordinated notes at December 31, 2007 was approximately $487.2 million.

We acquired interest rate swaps in connection with the European financing, which itself was acquired in connection with the IXEurope acquisition. Interest incurred for the European financing is based on variable LIBOR and EURIBOR interest rates and exposes us to interest rate risk. To mitigate the interest rate exposure, IXEurope had entered into two interest rate swap agreements to hedge a portion of the European financing in order to transfer floating rate exposure to the counterparty in exchange for fixed payments by us. Upon the date

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of the IXEurope acquisition and through December 31, 2007, these interest rate swaps were considered not to be effective hedges under the provisions of SFAS No. 133. As a result, the change in fair value of these two interest rate swaps totaling a loss of $138,000 was recorded as a reduction of interest expense in our statements of operations for the year ended December 31, 2007.

We may enter into additional hedging agreements in the future to mitigate our exposure to interest rate risk.

Foreign Currency Risk

The majority of our revenues and costs is denominated in U.S. dollars, generated mostly from customers and vendors in the U.S. Approximately 23% of our revenues and 24% of our costs were outside the U.S., and a large portion of those revenues and costs were denominated in a currency other than the U.S. dollar, primarily the Singapore dollar, Japanese yen, Hong Kong and Australian dollars, British pound, Swiss franc and Euro. We anticipate that in 2008 and beyond, approximately 30-40% of our revenues and costs will be generated and incurred outside of the U.S. in currencies other than the U.S. dollar. As a result, our operating results and cash flows are impacted by currency fluctuations relative to the U.S. dollar.

Furthermore, to the extent that our international sales are denominated in U.S. dollars, an increase in the value of the U.S. dollar relative to foreign currencies could make our services less competitive in the international markets. Although we will continue to monitor our exposure to currency fluctuations, and when appropriate, may use financial hedging techniques to minimize the effect of these fluctuations, there can be no assurance that exchange rate fluctuations will not adversely affect our financial results in the future.

In July and August 2007, we entered into forward contracts to purchase 265.2 million British pounds at an average forward rate of 2.020007, or the equivalent of $535.6 million, for purposes of hedging a portion of the purchase price of the IXEurope acquisition. Upon cash payment in September 2007, we recorded a foreign exchange gain of $1.5 million, which is reflected within other income (expense) on our statement of operations for the year ended December 31, 2007.

We may enter into additional hedging agreements in the future to mitigate our exposure to foreign currency risk.

Commodity Price Risk

Certain operating costs incurred by us are subject to price fluctuations caused by the volatility of underlying commodity prices. The commodities most likely to have an impact on our results of operations in the event of price changes are electricity and supplies and equipment used in our IBX centers. We are closely monitoring the cost of electricity at all of our locations.

In addition, as we are now building new, “greenfield” IBX centers, we are subject to commodity price risk for building materials related to the construction of these IBX centers, such as steel and copper. In addition, the lead-time to procure certain pieces of equipment is substantial, such as generators. Any delays in procuring the necessary pieces of equipment for the construction of our IBX centers could delay the anticipated openings of these new IBX centers and, as a result, increase the cost of these projects.

We currently do not employ forward contracts or other financial instruments to hedge commodity price risk.

The financial statements and supplementary data required by this Item 8 are listed in Item 15(a)(1) and begin at page F-1 of this Annual Report on Form 10-K.

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There is no disclosure to report pursuant to Item 9.

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, we conducted an evaluation of our disclosure controls and procedures, as such term is defined under Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Based on this evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this Annual Report on Form 10-K.

Management’s Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rule 13a-15(f). Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Our assessment of and conclusion on the effectiveness of internal control over financial reporting did not include the internal controls of the operations acquired from IXEurope plc on September 14, 2007, which are included in our fiscal 2007 consolidated financial statements and which, in the aggregate, consisted of $740.2 million and $534.6 million of total assets and net assets, respectively, as of December 31, 2007 and which in the aggregate, represented $37.5 million and $4.0 million of revenues and losses from operations, respectively, for the year then ended.

Based on our evaluation under the framework in Internal Control—Integrated Framework, our management concluded that our internal control over financial reporting was effective as of December 31, 2007. There were no significant changes in internal control over financial reporting during 2007 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

The effectiveness of our internal control over financial reporting as of December 31, 2007 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which is included herein on page F-1 of this Annual Report on Form 10-K.

Changes in Internal Control Over Financial Reporting

There has been no change in our internal controls over financial reporting during the fourth quarter of fiscal 2007 that has materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting.

There is no disclosure to report pursuant to Item 9B.

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PART III

Information required by this item is incorporated by reference to the Equinix proxy statement for the 2008 Annual Meeting of Stockholders.

We adopted a Code of Ethics applicable for Chief Executive Officer and Senior Financial Officers and a Code of Business Conduct. This information is incorporated by reference to the Equinix proxy statement for the 2008 Annual Meeting of Stockholders and is also available on our website, www.equinix.com.

Information required by this item is incorporated by reference to the Equinix proxy statement for the 2008 Annual Meeting of Stockholders.

Information required by this item is incorporated by reference to the Equinix proxy statement for the 2008 Annual Meeting of Stockholders.

Information required by this item is incorporated by reference to the Equinix proxy statement for the 2008 Annual Meeting of Stockholders.

Information required by this item is incorporated by reference to the Equinix proxy statement for the 2008 Annual Meeting of Stockholders.

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PART IV

(a)(1) Financial Statements:

(a)(2) All schedules have been omitted because they are not applicable or the required information is shown in the financial statements or notes thereto.

(a)(3) Exhibits: