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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

For the fiscal year ended December 31, 2010

OR

For the transition period from                    to                     

Commission file number 000-31293

EQUINIX, INC.

(Exact name of registrant as specified in its charter)

One Lagoon Drive, Fourth Floor, Redwood City, California 94065

(Address of principal executive offices, including ZIP code)

(650) 598-6000

(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 whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    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 $3.7 billion. As of January 31, 2011, a total of 46,198,990 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 2011 Annual Meeting of Stockholders, which is expected to be filed not later than 120 days after the registrant’s fiscal year ended December 31, 2010. 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, 2010

TABLE OF CONTENTS

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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”, “intentions”, “strategies”, “forecasts”, “predictions”, “plans” 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 connects businesses with partners and customers around the world through a global platform of high performance data centers, containing dynamic ecosystems and a broad choice of networks. More than 3,275 enterprise, cloud, digital content and financial companies connect to more than 625 network service providers and rely on Platform Equinix to grow their business, improve application performance and protect their vital digital assets. Equinix operates in 35 strategic markets across North America, Europe and Asia-Pacific and continually invests in expanding its platform to power customer growth.

Platform Equinix™ combines state-of-the-art International Business Exchange^® (IBX^®) data centers, a global footprint and unique ecosystems. Together these components accelerate business growth for Equinix’s customers by safeguarding their infrastructure, housing their assets and applications closer to users to improve performance and enabling them to collaborate with the widest variety of partners and customers.

Equinix’s platform offers these unique value propositions to customers:

Equinix has established a critical mass of customers which continues to drive new and existing customer growth and bookings. A supply and demand imbalance in the data center market has also contributed to Equinix’s revenue growth. In addition, as a result of a 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 data center have a negative effect on earnings until the data center generates sufficient revenues to cover these costs.

Our network-neutral business model contributes to our success in the market. We offer customers direct interconnection to an aggregation of bandwidth providers, rather than focusing on selling a particular network,

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including the world’s top carriers, Internet Service Providers (ISPs), broadband access networks (DSL / cable) and international carriers. Neutrality also means our customers can choose to buy from, or partner, with leading companies across our five targeted verticals. These include:

Equinix generates revenue by selling colocation, interconnection and managed IT infrastructure services on a global platform of 92 IBX data centers.

The market for Equinix’s services has historically been served by large telecommunications carriers which have bundled their telecommunications and managed services with their colocation offerings. In addition, some Equinix customers, such as Google and Microsoft, build and operate their own data centers for their large infrastructure deployments, called server farms. However, these customers rely upon Equinix IBX data centers for many of their critical interconnection relationships.

The need for large, wholesale outsourced data centers is also being addressed by real estate investment trusts (REITs) that build large data centers to meet customers’ needs for standalone data centers, a different customer segment than Equinix serves. However, with the increasing cost and complexity of the power and cooling requirements of today’s data center equipment, there continues to be a supply and demand imbalance in the market. The supply and demand imbalance in the industry has, to date, created a favorable pricing environment for Equinix, as well as an opportunity to increase market share. Equinix has gained many customers that have outgrown their existing data centers or that have realized the benefits of a network-neutral model and the ability to create their own optimized business ecosystems for the exchange of data. Strategically, we will continue to look at attractive opportunities to grow market share and selectively expand our footprint and service offerings. We continue to leverage our global reach and depth to differentiate based upon our ability to support truly global customer requirements in all our markets.

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Several factors contribute to the growth in demand for data center services, including:

Industry Background

The Internet is a collection of numerous independent networks interconnected to form a network of networks. Users on different networks are able to communicate with each other through interconnection services between these networks. For example, when a person sends an email to someone that uses a different provider for his or her connectivity (e.g., Comcast versus Verizon), the email must pass from one network to the other in order to get to its final destination. Equinix provides a physical point at which that interconnection can occur.

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 (the last two now parts of 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 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 quickly enough to accommodate traffic growth. This led to a need by the large carriers to find a more efficient way to exchange network traffic or peer. As a result, many customers satisfy their requirements for peering through data center service providers like Equinix because it permits them to peer with the networks they require within one location, using simple direct connections. Their ability to peer across the room or data center campus, instead of across a metro area, has increased the scalability of their operations while decreasing network costs.

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The interconnection model has further evolved over the years to include new services offerings. Starting with the peering and network communities, interconnection has since been used for new network services including carrier Ethernet, MPLS, VPN and mobility services, in addition to traditional international private line and voice services. The industry continues to evolve with a set of new service offerings where interconnection is often used to solve the network-to-network interconnection challenges.

In addition, the enterprise customer segment is also evolving. In the past, most enterprises opted to keep their data center requirements in house. However, several recent trends have led more and more enterprise CIOs to consider and/or choose to outsource some or all of their data center requirements. The combination of globalization, the proliferation of bandwidth intensive Internet-facing applications and rich media content, the rise of virtualization and cloud computing, business continuity and disaster recovery needs, and most importantly the recent economic downturn, have meant that enterprise CIOs must increasingly try to do more with less. Meanwhile, the biggest challenge for data center and operations managers is being out of data center space and power. With the typical in-house datacenter ranging in size from 2,000 to 40,000 square feet, and with very limited optical fiber availability, many CIOs struggle to find the necessary capital, in the current economic environment, to build out and connect their existing facilities. This is why many industry analysts forecast the colocation market to grow over the next three years at more than an approximately 20% compounded annual growth rate. Thus the scope of the industry for colocation has expanded in terms of market opportunity.

Equinix Value Proposition

More than 3,900 companies, including a diversified mix of cloud and IT service providers, content providers, enterprises, financial companies, and network service providers, currently operate within Equinix IBX data centers. These companies derive specific value from the following elements of the Equinix service offering:

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Our Strategy

Our objective is to expand our global leadership position as the premier network neutral data center operator for cloud and IT services providers, content providers, financial companies, enterprises and network services providers. Key components of our strategy include the following:

Improve customer performance through interconnection. We have assembled a critical mass of premier network providers and content companies and have become one of the core hubs of the information-driven world. This critical mass is a key selling point for companies that want to connect with a diverse set of networks to provide the best connectivity to their end-customers and network companies that want to sell bandwidth to companies and interconnect with other networks in the most efficient manner available. Currently, we service more than 625 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 cloud and IT services, enterprise and financial sectors, such as Bank of America, The GAP, Gannett Company, Inc., IBM, Salesforce.com, Sony and others. We expect these segments will continue to grow as they seek to leverage our critical mass of network providers and interconnect directly with each other to improve performance.

Streamline ease of doing business globally. Data center reliability, power availability and network choice are the most important attributes considered by our customers when they are choosing a data center provider in a particular location. We have long been recognized as a leader in these areas and our performance continues to improve against these criteria. Our power infrastructure delivered 99.9999% uptime globally in 2010.

In 2010, more than half of our revenue came from customers with deployments across two or more of our global regions, and as globalization continues, seamless global services will become an increasingly important data center selection criteria. We are currently rolling out global product, pricing and contracts harmonization initiatives to meet these global demands.

Deepen existing and grow new ecosystems. As networks, cloud and IT services providers, content providers, financial services providers and enterprises locate in our IBX data centers, it benefits their suppliers and business partners to do so as well to gain the full economic and performance benefits of direct interconnection for their business ecosystems. 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 optimized 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. We are rolling out innovative exchanges to accelerate commercial growth in our sites and accelerate this network effect.

Expand vertical go-to-market plan. We plan to continue to focus our go to market efforts on customer segments and business applications that value the Equinix value proposition of reliability, global reach and ecosystem collaboration opportunities. Today we have identified these segments as cloud and IT services, content and digital media, financial services, enterprises and network service providers. As digital business evolves, we will continue to identify and focus our go-to-market efforts on industry segments that need our value proposition.

Accelerate global reach and scale. We continue to evaluate expansion opportunities in select markets based on customer demand. We expect to open eight new IBX data centers, or IBX data center expansions, in eight markets in 2011. In April 2010, we successfully completed our acquisition of Switch and Data Facilities Company, Inc. (“Switch and Data”). This extended our presence into 16 new markets in the U.S. and Canada.

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 recently announced our intention to extend Platform Equinix to South America by investing with Riverwood Capital to acquire a controlling interest in ALOG Data

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Centers of Brazil S.A. We expect to execute this expansion strategy in a cost-effective and disciplined manner through a combination of acquiring existing data centers through lease or purchase, acquiring or investing in local data center operators and building new IBX data 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, cloud and IT services providers, content providers, financial companies and global enterprises. 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, 2010, we had 3,916 customers worldwide.

Typical customers in our five key customer categories include the following:

Customers typically sign renewable contracts of one or more years in length. No single customer accounted for 10% or more of our revenues for the years ended December 31, 2010, 2009 or 2008.

Our Services

Equinix provides a choice of data center services primarily comprised of colocation, interconnection and managed IT infrastructure services.

Colocation Services

Our IBX data centers provide our customers with secure, reliable and fault-tolerant environments that are necessary for optimum Internet commerce interconnection. Many of our IBX data 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 based on original facility design or market.

Within our IBX data 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, server and storage 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 customers’ 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 data centers directly from their chosen vendors. Cabinets (or suites) are priced with an initial installation fee and an ongoing recurring monthly charge.

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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. We also offer metered power in certain markets. 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 data centers. Because of the close proximity to their infrastructure within our IBX data centers, 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 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 Equinix Exchange services. In the peering community, we provide an important industry leadership role by acting as the relationship broker between parties who would like to interconnect within our IBX data centers. Our staff holds significant positions in many leading industry groups, such as the North American Network Operators’ Group, or NANOG, and the Internet Engineering Task Force, or IETF. Members of our staff have published industry-recognized white papers and strategy documents in the areas of peering and interconnection, many of which are used by other institutions worldwide in furthering the education and promotion of this important set of services. We expect to 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 data 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 data center 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.

Equinix Internet Exchange. Customers may choose to connect to and peer through our Equinix Internet 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 multiple, linked 10 gigabit ports of capacity instead of purchasing individual physical cross connects. The service is priced per IBX data center with an initial installation fee and an ongoing monthly recurring charge. Individual IBX data center prices increase as the number of participants on the exchange service grows.

Equinix IBXLink. Customers who are located in one IBX data center may need to interconnect with networks or other customers located in an adjacent or nearby IBX data center in the same metro area. IBXLink allows customers to seamlessly interconnect between IBX data centers 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 data 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 in that data center. This service, which is provided in our Asia-Pacific region, 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.

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Carrier Ethernet Exchange Services. We have launched a new Carrier Ethernet Exchange service similar to the Equinix Exchange in 10 initial markets where customers can connect via a central switching fabric to interconnect between multiple Carrier Ethernet Providers rather than creating individual Network to Network interfaces (NNIs) between individual carriers. The service builds on the benefits of the Internet community and extends the ability to interconnect the high growth Ethernet industry. The service is priced per IBX data center with an initial fee and a monthly recurring charge.

Managed IT Infrastructure Services

With the continued growth in Internet traffic, networks, service providers, enterprises and content providers are challenged to deliver fast and reliable service, while lowering costs. With more than 625 Internet Service Providers (ISPs) and carriers located in our IBX data centers, we leverage the value of network choice with our set of multi-network management and other outsourced IT services, including:

Professional Services. Our IBX data centers are staffed with Internet and telecommunications specialists who are on-site and/or 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 data center staff for a variety of tasks, when their own staff is not on site. These tasks may include equipment rebooting and 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, depending on the bandwidth used by the customer.

Sales and Marketing

Sales. We use a direct sales force and channel marketing program to market our services to global enterprises, content providers, financial companies and network service providers. 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. Our North America 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 Amsterdam, Dusseldorf, Frankfurt, Geneva, London, Munich, 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 data center participants often encourage their customers, suppliers and business partners to also locate in our IBX data centers. These customers, suppliers and business partners, in turn, encourage their business partners to locate in our IBX data 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. Equinix also focuses vertical sales specialists selling to support specific industry requirements for network and content providers, financial services, cloud computing and systems integrators and enterprise customer segments.

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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 active public relations and ongoing 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, Carrier Ethernet, 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, participating in Internet industry standard-setting bodies and through advertising and online campaigns. We continue to develop and host industry educational forums focused on peering technologies and practices for ISPs and content providers.

Our Competition

While a large number of enterprises own their own data centers, many others outsource some or all of their requirements to multi-tenant Internet data center facilities, such as those operated by Equinix. With the current challenging economic environment, we believe that the outsourcing trend is likely to not only continue but also to grow in the coming years. It is estimated that Equinix is one of over 650 companies that provide Internet data center services around the world, ranging in size from firms with a single data center in a single market to firms in over 20 markets. Equinix competes with these firms, which vary in terms of their data center offerings, including:

Colocation Providers

Colocation data centers are a type of Internet data center that can also be referred to as ‘retail’ data center space. Typically, colocation data center space is sold on the basis of individual racks/cabinets or cages ranging from 500 to 5,000 square feet in size. Typical customers of colocation providers include:

Full facility maintenance and systems, including fire suppression, security, power backup and HVAC, are routinely included in managed colocation offerings. A variety of additional services is typically available in colocation facilities, including remote hands technician services and network monitoring services.

In addition to Equinix, providers that offer colocation services both globally and locally include firms such as Savvis, Inc., Verizon Business, AT&T, Level 3 Communications, Qwest, NTT and COLT.

Carrier-Neutral Colocation Providers

In addition to data center space and power, colocation providers also offer interconnection services. Certain of these providers, known as network or carrier-neutral colocation providers, can offer customers the choice of hundreds of network service providers, or ISPs, to choose from. Typically, customers use interconnection services to buy Internet connectivity, connect voice over IP (VoIP) telephone networks, perform financial

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exchange and settlement functions or perform business-to-business e-commerce. Carrier-neutral data centers are often located in key network hubs around the world like New York; Ashburn, Virginia; London; Amsterdam; Singapore, and Hong Kong. Two types of data center facilities offering carrier-neutral colocation are used for many network-to-network interconnections:

In addition to Equinix, other providers that we believe could be defined as offering carrier-neutral colocation include CoreSite, Interxion, Telecity Group, Telx, Global Switch, TELEHOUSE and Terremark.

Wholesale Data Center Providers

Wholesale data center providers lease data center space that is typically sold in cells or pods (i.e., individual white-space rooms) ranging in size from 10,000 to 20,000 square feet, or larger. Wholesale data center providers sell to both enterprises and to colocation providers. These data centers primarily provide space and power without additional services like technicians, remote hands services or network monitoring (although other tenants might offer such services). Wholesale data center providers are typically classified as REITs (real estate investment trusts). Their offerings are conceptually similar to a landlord who provides empty space and basic maintenance services to warehouse tenants.

Sample wholesale data center providers include Digital Realty Trust and Dupont Fabros Technology.

Managed Hosters

Managed hosting services are provided by several firms that also provide data center colocation services. Typically, managed hosting providers can manage server hardware that is owned by either the hosting provider or the customer. They can also provide a combination of comprehensive systems administration, database administration and sometimes application management services. Frequently, this results in managed hosting providers “running” the customer’s servers, although such administration is frequently shared. The provider may manage such functions as operating systems, databases, security and patch management, while the customer will maintain management of the applications riding on top of those systems.

The full list of potential services that can be offered as part of managed hosting is substantial and includes services such as remote management, custom applications, helpdesk, messaging, databases, disaster recovery, managed storage, managed virtualization, managed security, managed networks and systems monitoring. Managed hosting services are typically used for:

Examples of managed hosters include Rackspace, Verizon Business, AT&T, Savvis, Inc., SunGard and NaviSite.

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Unlike other providers whose core businesses are bandwidth or managed services, we focus on neutral interconnection hubs for cloud and IT service providers, content providers, financial companies, enterprises and network service providers. As a result, we are free of the limited choices found commonly at other hosting/colocation companies. We compete based on the quality of our IBX data centers, our ability to provide a one-stop global solution in our North American, European and Asia-Pacific locations, the performance and diversity of our network-neutral strategy, and the economic benefits of the aggregation of top network and business ecosystems under one roof. We expect to continue to benefit from several industry trends including a supply/demand imbalance 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, the continued growth of broadband and significant growth in Ethernet as a network alternative, and mobile applications.

Our Business Segment Financial Information

We currently operate in three reportable segments, comprised of our North America, Europe and Asia-Pacific geographic regions. Information attributable to each of our reportable segments is set forth in Note 15 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.

Employees

As of December 31, 2010, we had 1,921 employees. We had 1,156 employees based in the North America, 482 employees based in Europe and 283 employees based in Asia-Pacific. Of those employees, 837 were in engineering and operations, 320 were in sales and marketing and 764 were in management, finance and administration.

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 and 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:

Acquisitions present many risks, and we may not realize the financial or strategic goals that were contemplated at the time of any transaction.

Over the last several years, we have completed several acquisitions, including that of IXEurope plc in 2007, Virtu Secure Webservices B.V. in 2008, Upminster GmbH in 2009 and Switch and Data in 2010. We may make additional acquisitions in the future, which may include acquisitions of businesses, products, services or technologies that we believe to be complementary, acquisitions of new IBX data centers or real estate for development of new IBX data centers or through investments in local data center operators. For example, we

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recently announced our intention to acquire a controlling interest in ALOG Data Centers of Brazil S.A. We may pay for future acquisitions by using our existing cash resources (which may limit other potential uses of our cash), incurring additional debt (which may increase our interest expense, leverage and debt service requirements) and/or issuing shares (which may dilute our existing stockholders and have a negative effect on our earnings per share). Acquisitions expose us to several potential risks, including:

The occurrence of any of these risks could have a material adverse effect on our business, results of operations, financial condition or cash flows.

We cannot assure you that the price for any future acquisitions of IBX data centers will be similar to prior IBX data center acquisitions. In fact, we expect costs required to build or render new IBX data 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 substantial debt could adversely affect our cash flows and limit our flexibility to raise additional capital.

We have a significant amount of debt and expect to incur additional debt to support our growth. As of December 31, 2010, our total indebtedness was approximately $2.0 billion, our stockholders’ equity was $1.9 billion and our cash and investments totaled $592.8 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.

We may also need to refinance a portion of our outstanding debt as it matures, such as our $250.0 million 2.50% convertible subordinated notes due in 2012. There is a risk that we may not be able to refinance existing debt or that the terms of any refinancing may not be as favorable as the terms of our existing debt. Furthermore, if prevailing interest rates or other factors at the time of refinancing result in higher interest rates upon refinancing, then the interest expense relating to that refinanced indebtedness would increase. These risks could materially adversely affect our financial condition, cash flows and results of operations.

The uncertain economic environment may continue to have an impact on our business and financial condition.

The uncertain economic environment could have an adverse effect on our liquidity. Customer collections are our primary source of cash. While we believe we have a strong customer base and have continued to experience strong collections, if the current market conditions were to worsen, some of our customers may have difficulty paying us and we may experience increased churn in our customer base, including reductions in their commitments to us. We may also be required to further increase our allowance for doubtful accounts and our results would be negatively impacted. Our sales cycle could also be further lengthened if customers slow spending, or delay decision-making, on our products and services, which could adversely affect our revenue growth. Finally, we could also experience pricing pressure as a result of economic conditions if our competitors lower prices and attempt to lure away our customers with lower cost solutions.

The uncertain economic environment could also have an impact on our foreign exchange forward contracts if our counterparties’ credit deteriorates further or they are otherwise unable to perform their obligations.

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Finally, our ability to access the capital markets may be severely restricted at a time when we would like, or need, to do so which could have an impact on our flexibility to pursue additional expansion opportunities and maintain our desired level of revenue growth in the future.

The market price of our stock may continue to be highly volatile, and the value of an investment in our common stock may decline.

Since January 1, 2010, the closing sale price of our common stock on the NASDAQ Global Select Market has ranged from $70.34 to $109.56 per share. The market price of the shares of our common stock has been and may continue to be highly volatile. General economic and market conditions, and market conditions for telecommunications stocks in general, may affect the market price of our common stock.

Announcements by others or us may also have a significant impact on the market price of our common stock. These announcements may relate to:

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. Furthermore, companies that have experienced volatility in the market price of their stock have been subject to securities class action litigation. We may be the target of this type of litigation in the future. Securities litigation against us could result in substantial costs and/or damages, and divert management’s attention from other business concerns, which could seriously harm our business.

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

Our capital expenditures, together with ongoing operating expenses and obligations to service our debt, will be a substantial drain on our cash flow and may decrease our cash balances. 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 additional debt and/or equity financing or to generate sufficient cash from operations may require us to prioritize projects or curtail capital expenditures which could adversely affect our results of operations.

Fluctuations in foreign currency exchange rates in the markets in which we operate internationally could harm our results of operations.

We may experience gains and losses resulting from fluctuations in foreign currency exchange rates. To date, the majority of our revenues and costs are denominated in U.S. dollars; however, the majority of revenues and

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costs in our international operations are denominated in foreign currencies. 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 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 as a result of declines in the U.S dollar relative to foreign currencies. In addition, fluctuating foreign currency exchange rates have a direct impact on how our international results of operations translate into U.S. dollars.

Although we have in the past, and may decide in the future, to undertake foreign exchange hedging transactions to reduce foreign currency transaction exposure, we do not currently intend to eliminate all foreign currency transaction exposure. For example, while we hedge certain of our foreign currency assets and liabilities on our consolidated balance sheet, we do not hedge revenue. Therefore, any weakness of the U.S. dollar may have a positive impact on our consolidated results of operations because the currencies in the foreign countries in which we operate may translate into more U.S. dollars. However, if the U.S. dollar strengthens relative to the currencies of the foreign countries in which we operate our consolidated financial position and results of operations may be negatively impacted as amounts in foreign currencies will generally translate into fewer U.S. dollars. For additional information on foreign currency risk, refer to our discussion of foreign currency risk in “Quantitative and Qualitative Disclosures About Market Risk” included in Part II, Item 7A of this Annual Report.

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 and the construction of new IBX data centers beyond those expansion projects already announced. We will be required to commit substantial operational and financial resources to these IBX data centers, generally 12 to 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 data centers. Either of these contingencies, if they were to occur, could make it difficult for us to realize expected or reasonable returns on these investments.

Our products and services have a long sales cycle that may harm our revenues and operating results.

A customer’s decision to license cabinet space in one of our IBX data 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 data centers until they are confident that the IBX data 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. We are also planning significant hiring in our sales force for 2011. It will take time for these new hires to become fully productive.

The current economic downturn may further impact this long sales cycle by making it extremely difficult for customers to accurately forecast and plan future business activities. This could cause customers to slow spending, or delay decision-making, on our products and services, which would delay and lengthen our sales cycle.

Delays due to the length of our sales cycle may materially and adversely affect our revenues and operating results, which could harm our ability to meet our forecasts for a given quarter and cause volatility in our stock price.

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

As of December 31, 2010, our accumulated deficit was $349.1 million. Although we have generated net income for each fiscal year since 2008, which was our first full year of net income since our inception, we are

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also currently investing heavily in our future growth through the build-out of multiple additional IBX data centers and IBX data center expansions as well as acquisitions of complementary businesses. As a result, we will incur higher depreciation and other operating expenses, as well as acquisition costs and interest expense, that may negatively impact our ability to sustain profitability in future periods unless and until these new IBX data centers generate enough revenue to exceed their operating costs and cover our additional overhead needed to scale our business for this anticipated growth. The current global financial crisis may also impact our ability to sustain profitability if we cannot generate sufficient revenue to offset the increased costs of our recently-opened IBX data centers or IBX data centers currently under construction. In addition, costs associated with the acquisition and integration of any acquired 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 sustain profitability. Finally, 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.

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 data centers. While we own certain of our IBX data centers, others are leased by us, and we rely on the landlord for basic maintenance of the property. If such landlord has not maintained a leased property sufficiently, we may be forced into an early exit from the center which could be disruptive to our business. Furthermore, we continue to acquire IBX data centers not built by us. If we discover that these IBX data centers and their infrastructure assets are not in the condition we expected when they were acquired, we may be required to incur substantial additional costs to repair or upgrade the centers.

The services we provide in each of our IBX data centers are subject to failure resulting from numerous factors, including:

Problems at one or more of our IBX data 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 data centers could result in difficulty maintaining service level commitments to these customers and potential claims related to such failures. Because our IBX data centers are critical to many of our customers’ businesses, service interruptions or significant equipment damage in our IBX data centers could also result in lost profits or other indirect or consequential damages to our customers. We cannot guarantee that a court would enforce any contractual limitations on our liability in the event that one of our customers brings a lawsuit against us as the result of a problem at one of our IBX data centers.

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We may incur significant liabilities to our customers in connection with a loss of power or our failure to meet other service level commitment obligations, or if we are held liable for a substantial damage award. 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.

We may also incur significant liability in the event of an earthquake, particularly in California where insurance coverage for earthquakes can be extremely expensive. While we purchase minimal levels of earthquake coverage for certain of our IBX data centers in California, at other California IBX data centers we have elected to self-insure. In the event of a large earthquake in California, we may find our insurance coverage to be inadequate to cover our damages, and our business, financial condition and results of operations could be materially and adversely impacted.

Furthermore, we are dependent upon Internet service providers, telecommunications carriers and other website operators in the North America region, Asia-Pacific region, 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 and adversely impacted.

Our construction of additional new IBX data centers, or IBX data center expansions, could involve significant risks to our business.

In order to sustain our growth in certain of our existing and new markets, we must either expand an existing data center or acquire suitable land with or without structures to build new IBX data centers from the ground up. Expansions or new builds are currently underway, or being contemplated, in many of our markets. A new build involves substantial planning and lead-time, much longer time to completion than an IBX retrofit of an existing data center or a data center expansion, and significantly higher costs of construction, equipment and materials, which could have a negative impact on our returns. Any construction requires us to carefully select and rely on the experience of one or more general contractors, designers and associated subcontractors during the design and construction process. Should a general contractor, designer or significant subcontractor experience financial or other problems during the design or 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 data centers adjacent to our existing locations, we may be limited by the inventory and location of suitable properties, as well as by the need for adequate power and fiber to the site. In the event we decide to build new IBX data centers separate from our existing IBX data 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 and lower margins and could have a negative impact on customer retention over time.

Environmental regulations may impose upon us new or unexpected costs.

We are subject to various federal, state, local and foreign 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

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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. Furthermore, environmental laws and regulations change frequently and may require additional investment to maintain compliance. 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.

Fossil fuel combustion creates greenhouse gas emissions that are linked to global climate change. Regulations to limit greenhouse gas emissions are in force in the European Union in an effort to prevent or reduce climate change. In the United States, federal legislative proposals have been considered that would, if adopted, implement some form of regulation or taxation to reduce or mitigate greenhouse gas (“GHG”) emissions. In addition, the U.S. Environmental Protection Agency (“EPA”) is taking steps towards using its existing authority under the Clean Air Act to regulate GHG emissions. On June 3, 2010, EPA published a final rule, known as the Tailoring Rule, setting forth the permitting program for regulating GHG emissions from major stationary sources. These permitting requirements will include, but are not limited to, meeting the best available control technologies for GHG emissions, and monitoring, reporting and recordkeeping for GHG emissions. The first steps of the program became effective January 2, 2011, and apply to large sources of GHGs such as, for example, fossil-fueled electricity generating facilities, that are already subject to Clean Air Act major source permits for their emission of non-greenhouse gas air pollutants (such as sulfur dioxide or particulate matter). The second step of the permitting program is effective July 1, 2011, and applies to the construction a new facility that will emit 100,000 tons per year or more of carbon dioxide equivalent (“CO2e”, a unit of measurement for GHGs) or to the modification of an existing facility that results in an increase of GHG emissions by 75,000 tons per year of CO2e. There is a small-source exception to the Tailoring Rule that we believe applies to our facilities. Under the exception, no source with emissions below 50,000 tons per year of CO2e or any modification resulting in an increase of less than 50,000 tons per year of CO2e will be subject to PSD or Title V permitting before at least April 30, 2016. EPA also announced plans in the final rule to develop permitting requirements for smaller sources of GHGs after the expiration of the small-source exception, which could potentially affect our facilities. We are in the process of confirming that the small-source exception applies to our facilities and will continue to monitor the developments of this regulatory program to evaluate its impact on our facilities and business.

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. For example, California enacted AB-32, the Global Warming Solutions Act of 2006, prescribing a statewide cap on global warming pollution with a goal of reaching 1990 GHG emission levels by 2020 and 80% below 1990 levels by 2050 and establishing a mandatory emissions reporting program. On December 16, 2010, the California Air Resources Board adopted the initial elements of a cap-and-trade program to implement AB-32, which will establish a minimum price for greenhouse gas emission allowances required to generate electricity in California or import electricity into California. This cap-and-trade regulation is intended to take effect January 1, 2012, and will increase our electricity costs by an amount that cannot yet be determined, but could exceed 5% of our costs of electricity at our California locations.

Federal, regional, state and international regulatory programs are still developing. In their final form, they may include a tax on carbon, a carbon “cap-and-trade” market, and/or other restrictions on carbon and GHG emissions. The area of GHG limitations and regulation is rapidly changing and will continue to change as

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additional legislation is considered and adopted, and regulations are finalized that implement existing law. For example, the United Kingdom recently adopted the mandatory Carbon Reduction Commitment Energy Efficiency Scheme (“CRC”), which requires certain public and private sector organizations that are consumers of large amounts of electricity to register with the program, participate in energy-saving activities and reduce their GHG emissions. The CRC became effective April 1, 2010, and qualifying organizations were required to register by September 30, 2010, which we have done. Recently the new United Kingdom Government has postponed the start of the CRC for at least one year to evaluate certain aspects of the CRC, and we are monitoring developments and continuing to evaluate the extent of our obligations and the implications for our business in the United Kingdom.

We do not anticipate that climate change-related laws and regulations would directly limit the emissions of GHG by our operations. We could, however, be directly subject to taxes, fees or costs, or could indirectly be required to reimburse electricity providers for such costs that would represent the amount of GHG we emit. The expected controls on GHG emissions are 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. The physical impacts of climate change, including extreme weather conditions such as heat waves, could materially increase our costs of operation due to, for example, an increase in our energy use in order to maintain the temperature and internal environment of our data centers necessary for our operations. To the extent any environmental laws enacted or regulations passed by the United States, or any domestic or foreign jurisdiction we perform business in, impose new or unexpected costs, our business, results of operations or financial condition may be adversely affected.

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

Our IBX data 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 telecom companies, carriers, Internet service providers and webhosting 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 data 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 data centers. If these competitors were able to adopt aggressive pricing policies together with offering colocation space, our ability to generate revenues may be materially and adversely affected.

We may also face competition from persons seeking to replicate our IBX data center concept by building new data centers or converting existing data 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 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 IBX data centers, 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

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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 data centers.

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 data 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 data centers in 2005, London metro area IBX data centers in 2007 and Paris metro area IBX data centers in 2009.

In addition, global fluctuations in the price of power can increase the cost of energy, and although contractual price increase clauses exist in the majority of our customer agreements, we may not always choose 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 data center designs.

We are exposed to potential risks from errors in our financial reporting systems and controls, including the potential for material misstatements in our consolidated financial statements.

Section 404 of the Sarbanes-Oxley Act of 2002 requires companies to evaluate their internal controls over financial reporting. Although we received an unqualified opinion regarding the effectiveness of our internal control over financial reporting as of December 31, 2010, in the course of our ongoing evaluation we have identified certain areas where we would like to improve and we are in the process of evaluating and designing enhanced processes and controls to address such areas, none of which we believe constitutes 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 and as we acquire other businesses.

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 have in the

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past, and may in the future, discover deficiencies in existing systems and controls. In addition, internal reporting systems and controls are subject to human error. Any such deficiencies could result in material misstatements in our consolidated financial statements, which might involve restating previously issued financial statements. Additionally, as we expand, we will need to implement new systems to support our financial reporting systems and controls. We may not be able to implement these systems such that errors would be identified in a timely manner, which could result in material misstatements in our consolidated financial statements.

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, 2010, 2009 and 2008, we recognized 38%, 39% and 37%, respectively, of our revenues outside the U.S. We currently operate outside of North America in Europe and in the Asia-Pacific region. We also recently announced our intention to expand into South America through an investment in ALOG Data Centers of Brazil S.A.

To date, the network neutrality of our IBX data centers and the variety of networks available to our customers has often been a competitive advantage for us. In certain of our acquired IBX data centers in the Asia-Pacific region 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 those markets. In addition, 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.

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

In addition, compliance with international and U.S. laws and regulations that apply to our international operations increases our cost of doing business in foreign jurisdictions. These laws and regulations include data privacy requirements, labor relations laws, tax laws, anti-competition regulations, import and trade restrictions, export requirements, U.S. laws such as the Foreign Corrupt Practices Act, and local laws which also prohibit corrupt payments to governmental officials. Violations of these laws and regulations could result in fines, criminal sanctions against us, our officers or our employees, and prohibitions on the conduct of our business.

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Any such violations could include prohibitions on our ability to offer our services in one or more countries, could delay or prevent potential acquisitions, and could also materially damage our reputation, our brand, our international expansion efforts, our ability to attract and retain employees, our business and our operating results. Our success depends, in part, on our ability to anticipate and address these risks and manage these difficulties.

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

Customers are increasing their use of high-density electrical power equipment, such as blade servers, in our IBX data centers which has significantly increased the demand for power on a per cabinet basis. Because many of our IBX data centers were built a number of years ago, the current demand for electrical power may exceed the designed electrical capacity in these centers. As electrical power, not space, is a limiting factor in many of our IBX data centers, our ability to fully utilize those IBX data centers may be limited. The availability of sufficient power may also pose a risk to the successful operation of our new IBX data centers. The ability to increase the power capacity of an IBX data center, 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 data center 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 data centers could become obsolete sooner than expected.

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 be volatile. We may 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. Prior to 2008, we had generated net losses every fiscal year since inception. It is possible that we may not be able to generate 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 securities.

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

While we own certain of our IBX data centers, others are leased under long-term arrangements with lease terms expiring at various dates ranging from 2011 to 2035. These leased centers have all been subject to significant development by us in order to convert them from, in most cases, vacant buildings or warehouses into IBX data centers. Most of our IBX data center leases have renewal options available to us. However, many of 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.

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

The presence of diverse telecommunications carriers’ fiber networks in our IBX data 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 data centers. Carriers will likely evaluate the revenue opportunity of an IBX data center based on the assumption that the environment will be highly competitive. We cannot provide assurance that each and every carrier will elect to offer its services within our IBX data centers or that once a carrier has decided to provide Internet connectivity to our IBX data centers that it will continue to do so for any period of time.

Our new IBX data centers require construction and operation of a sophisticated redundant fiber network. The construction required to connect multiple carrier facilities to our IBX data centers is complex and involves factors outside of our control, including regulatory processes and the availability of construction resources. Any hardware or fiber failures on this network may result in significant loss of connectivity to our new IBX data center expansions. This could affect our ability to attract new customers to these IBX data centers or retain existing customers.

If the establishment of highly diverse Internet connectivity to our IBX data 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.

We may be vulnerable to security breaches which could disrupt our operations and have a material adverse effect on our financial performance and operating results.

A party who is able to compromise the security measures on our networks or the security of our infrastructure 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. As techniques used to breach security change frequently, and are generally not recognized until launched against a target, we may not be able to implement security measures in a timely manner or, if and when implemented, we may not be certain whether these measures could be circumvented. Any breaches that may occur could expose us to increased risk of lawsuits, regulatory penalties, loss of existing or potential customers, harm to our reputation and increases in our security costs, which could have a material adverse effect on our financial performance and operating results.

We have government customers, which subjects us to risks including early termination, audits, investigations, sanctions and penalties.

We derive some revenues from contracts with the U.S. government, state and local governments and their respective agencies. Some of these customers may terminate all or part of their contracts at any time, without cause.

There is increased pressure for governments and their agencies, both domestically and internationally, to reduce spending. Some of our federal government contracts are subject to the approval of appropriations being made by the U.S. Congress to fund the expenditures under these contracts. Similarly, some of our contracts at the state and local levels are subject to government funding authorizations.

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Additionally, government contracts are generally subject to audits and investigations which could result in various civil and criminal penalties and administrative sanctions, including termination of contracts, refund of a portion of fees received, forfeiture of profits, suspension of payments, fines and suspensions or debarment from future government business.

Because we depend on the development and growth of a balanced customer base, including key magnet customers, 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 enterprises, cloud, digital content and financial companies, and network service providers. We consider certain of these customers to be key magnets in that they draw in other customers. The more balanced the customer base within each IBX data 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 data 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 presence of key customers attracting business through vertical market ecosystems, the IBX data center’s operating reliability and security and our ability to effectively market our services. However, some of our customers may face competitive pressures and may ultimately not be successful or may be consolidated through merger or acquisition. If these customers do not continue to use our IBX data centers it may be disruptive to our business. Finally, the uncertain economic climate may harm our ability to attract and retain customers if customers slow spending, or delay decision-making, on our products and services, or if customers begin to have difficulty paying us and we experience increased churn in our customer base. Any of these factors may hinder the development, growth and retention of a balanced customer base and adversely affect our business, financial condition and results of operations.

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

We are subject to various legal proceedings as described in Note 13 to Notes to Consolidated Financial Statements in this Annual Report on Form 10-K. In addition, we may, in the future, be subject to other litigation. For example, securities class action litigation has often been brought against a company following periods of volatility in the market price of its securities. Litigation can be lengthy, expensive, and divert management’s attention and resources. Results cannot be predicted with certainty and an adverse outcome in litigation could result in monetary damages or injunctive relief that could seriously harm our business, results of operations, financial condition or cash flows.

We may not be able to protect our intellectual property rights.

We cannot assure that the steps taken by us to protect our intellectual property rights will be adequate to deter misappropriation of proprietary information or that we will be able to detect unauthorized use and take appropriate steps to enforce our intellectual property rights. We also are subject to the risk of litigation alleging infringement of third-party intellectual property rights. Any such claims could require us to spend significant sums in litigation, pay damages, develop non-infringing intellectual property, or acquire licenses to the intellectual property that is the subject of the alleged infringement.

Government regulation may adversely affect our business.

Various laws and governmental regulations, both in the U.S. and abroad, governing Internet related services, related communications services and information technologies remain largely unsettled, even in areas where there has been some legislative action. For example, the Federal Communications Commission recently issued a Notice of Inquiry for comments on proposed Internet rules and regulation of broadband that may result in

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material changes in the regulations and contribution regime affecting us and our customers. Likewise, as part of a review of the current equity market structure, the Securities and Exchange Commission and the Commodity Futures Trading Commission have both sought comments regarding the regulation of independent data centers, such as Equinix, which provide colocation services for financial markets and exchanges. Such regulation may ultimately affect our provision of services.

It also 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 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 adoption, or modification of laws or regulations relating to the Internet and our business, or interpretations of existing laws, could have a material adverse effect on our business, financial condition and results of operations.

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 continued threat of terrorist activity and other acts of war or hostility contribute to a climate of political and economic uncertainty. Due to existing or developing circumstances, we may need to incur additional costs in the future to provide enhanced security, including cybersecurity, 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 data centers. We may not have adequate property and liability insurance to cover catastrophic events or attacks.

We have various mechanisms in place that may discourage takeover attempts.

Certain provisions of our certificate of incorporation and bylaws may discourage, delay or prevent a third party from acquiring control of us in a merger, acquisition or similar transaction that a stockholder may consider favorable. Such provisions include:

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In addition, Section 203 of the Delaware General Corporation Law, which restricts certain business combinations with interested stockholders in certain situations, may also discourage, delay or prevent someone from acquiring or merging with us.

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

Our executive offices are located in Redwood 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 IBX data center there. Our European headquarters office is located in London, U.K. and our regional sales offices in Europe are based in our IBX data centers in Europe. We have entered into leases for certain of our IBX data centers in Dallas, Texas; Chicago, Illinois; Los Angeles, San Jose, Santa Clara and Sunnyvale, California; Newark and 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 and Zwolle, Netherlands. We own certain of our IBX data centers in Ashburn, Virginia; Chicago, Illinois; Los Angeles and San Jose, California, Frankfurt, Germany and Amsterdam, the Netherlands. We own campuses in Ashburn, Virginia and Frankfurt, Germany that house some of our IBX data centers mentioned in the preceding sentence. We assumed leases from the Switch and Data acquisition for IBX data centers in Phoenix, Arizona; Los Angeles, Palo Alto, San Jose and Sunnyvale, California; Englewood, Colorado; Miami and Tampa, Florida; Atlanta, Georgia; Chicago, Illinois; Indianapolis, Indiana; Dallas, Texas; Waltham, Massachusetts; Southfield, Mississippi; St. Louis, Missouri; North Bergen, New Jersey; Buffalo and New York, New York; Cleveland, Ohio; Philadelphia and Pittsburgh, Pennsylvania; Nashville, Tennessee; Reston and Vienna, Virginia; Seattle, Washington and Toronto, Canada.

IPO Litigation

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. Similar lawsuits were filed against approximately 300 other issuers and related parties. These lawsuits have been coordinated before a single judge. 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.

The parties in the approximately 300 coordinated cases, including the parties in the Equinix case, reached a settlement. It provides for releases of existing claims and claims that could have been asserted relating to the

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conduct alleged to be wrongful from the class of investors participating in the settlement. The insurers for the issuer defendants in the coordinated cases will make the settlement payment on behalf of the issuers, including Equinix. On October 6, 2009, the Court granted final approval to the settlement. Six notices of appeal and one petition seeking permission to appeal were filed. Objectors to the settlement have filed briefs in support of two separate appeals. The remaining objectors have withdrawn their appeals with prejudice.

Due to the inherent uncertainties of litigation, we cannot accurately predict the ultimate outcome of the matter. 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 intend to continue to defend the action vigorously if the settlement does not survive the appeal.

Pihana Litigation

On August 22, 2008, a complaint was filed against Equinix, certain former officers and directors of Pihana Pacific, Inc. (“Pihana”), certain investors in Pihana, and others. The lawsuit was filed in the First Circuit Court of the State of Hawaii, and arises out of December 2002 agreements pursuant to which Equinix merged Pihana and i-STT (a subsidiary of Singapore Technologies Telemedia Pte Ltd) into the Internet exchange services business of Equinix. Plaintiffs, who were allegedly holders of Pihana common stock, allege that their rights as shareholders were violated, and the transaction was effectuated improperly, by Pihana’s majority shareholders, officers and directors, with the alleged assistance of Equinix and others. Among other things, plaintiffs contend that they effectively had a right to block the transaction, that this supposed right was disregarded, and that they improperly received no consideration when the deal was completed. The complaint seeks to recover unspecified punitive damages, equitable relief, fees and costs, and compensatory damages in an amount that plaintiffs allegedly “believe may be all or a substantial portion of the approximately $725.0 million value of Equinix held by Defendants” (a group that includes more than 30 individuals and entities). An amended complaint, which adds new plaintiffs (other alleged holders of Pihana common stock) but is otherwise substantially similar to the original pleading, was filed on September 29, 2008 (the “Amended Complaint”). On October 13, 2008, a complaint was filed in a separate action by another purported holder of Pihana common stock, naming the same defendants and asserting substantially similar allegations as the August 22, 2008 and September 29, 2008 pleadings. On December 12, 2008, the court entered a stipulated order, which consolidated the two actions under one case number and set January 22, 2009 as the last day for Defendants to move to dismiss or otherwise respond to the Amended Complaint, the operative complaint in this case. On January 22, 2009, motions to dismiss the Amended Complaint were filed by Equinix and other Defendants. On April 24, 2009, plaintiffs filed a Second Amended Complaint (“SAC”) to correct the naming of certain parties. The SAC is otherwise substantively identical to the Amended Complaint, and all motions to dismiss the Amended Complaint have been treated as responsive to the SAC. On September 1, 2009, the Court heard Defendants’ motions to dismiss the SAC and ruled at the hearing that all claims against all Defendants are time-barred. The Court also considered whether there were further independent grounds for dismissing the claims, and supplemental briefing was submitted with respect to claims against one defendant and plaintiffs’ renewed request for further leave to amend. On March 23, 2010, the Court entered final Orders granting the motions to dismiss as to all Defendants and issued a minute Order denying plaintiffs’ renewed request for further leave to amend. On May 21, 2010, plaintiffs filed a Notice of Appeal, and plaintiffs’ appeal is currently pending before the Hawaii Supreme Court. We believe that plaintiffs’ claims and alleged damages are without merit and we intend to continue to defend the litigation vigorously.

Due to the inherent uncertainties of litigation, we cannot accurately predict the ultimate outcome of the matter. 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.

529 Bryant Litigation

On September 10, 2010, a lawsuit was filed in the Superior Court of California in Santa Clara County by 529 Bryant Street Partners LLC (“Landlord”) against our wholly-owned subsidiaries Switch & Data CA Nine

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LLC (“Tenant”) and Switch & Data Facilities Company, Inc. (“Guarantor”). The lawsuit alleged that Tenant breached certain non-monetary obligations under its lease (the “Lease”) of our data center located at 529 Bryant Street in Palo Alto, California (the “Premises”) and sought monetary damages, specific performance of those non-monetary obligations and ejectment of Tenant from the Premises. The lawsuit also alleged that Guarantor breached its obligations under its guaranty of the Lease.

On November 10, 2010, Tenant and Landlord entered into an agreement pursuant to which Landlord agreed to dismiss its lawsuit against Tenant, and waive and release all claims against Tenant related thereto. In connection with the agreement, Tenant agreed to an increase in rent under the Lease and Landlord agreed to certain improved non-monetary lease terms. Equinix also agreed to guaranty the obligations of Tenant under the Lease.

The lawsuit was dismissed with prejudice on November 15, 2010.

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PART II

Our common stock is quoted on the NASDAQ Global Select Market 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 Global Select Market during the last two years.

As of January 31, 2011, we had 46,198,990 shares of our common stock outstanding held by approximately 262 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. Furthermore, most of our senior creditors restrict us from paying dividends.

During the year ended December 31, 2010, we did not issue or sell any securities on an unregistered basis.

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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, 2005 and December 31, 2010 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, 2005 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, 2010 and the consolidated balance sheet data as of December 31, 2010, 2009, 2008, 2007 and 2006 have been derived from our audited consolidated financial statements and the related notes. 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, 2010 and as of December 31, 2010 and 2009, should be read in conjunction with our audited consolidated financial statements and the related notes in Item 8 of this Annual Report on Form 10-K and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Item 7 of this Annual Report on Form 10-K. In addition, in April 2010, we completed our acquisition of Switch & Data Facilities Company, Inc., which was a significant acquisition. For further information on this acquisition, refer to Note 2 of our Notes to Consolidated Financial Statements in Item 8 of 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.

Our management’s discussion and analysis of financial condition and results of operations is intended to assist readers in understanding our financial information from our management’s perspective and is presented as follows:

In February 2010, we issued $750.0 million aggregate principal amount of 8.125% senior notes due March 1, 2018 which we refer to as the senior notes offering.

On April 30, 2010, as more fully described in Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed the acquisition of Switch & Data Facilities Company, Inc., referred to as Switch and Data, a publicly-held company headquartered in Tampa, Florida. We refer to this transaction as the Switch and Data acquisition. Switch and Data operated 34 data centers in the U.S. and Canada. The combined company operates under the Equinix name.

Overview

Equinix provides global data center services that protect and connect the world’s most valued information assets. Global enterprises, financial services companies, and content and network service providers rely upon Equinix’s leading insight and 92 data centers in 35 markets around the world for the safeguarding of their critical IT equipment and the ability to directly connect to the networks that enable today’s information-driven economy. Equinix offers the following data center services: premium data center colocation, interconnection and exchange services, and outsourced IT infrastructure services. As of December 31, 2010, we operated or had partner IBX data centers in the Atlanta, Boston, Buffalo, Chicago, Cleveland, Dallas, Denver, Detroit, Indianapolis, Los Angeles, Miami, Nashville, New York, Philadelphia, Phoenix, Pittsburgh, Seattle, Silicon Valley, St. Louis, Tampa, Toronto and Washington, D.C. metro areas in North America; France, Germany, the Netherlands, Switzerland and the United Kingdom in Europe; and Australia, Hong Kong, Japan, Shanghai and Singapore in Asia-Pacific.

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We leverage our global data centers in 35 markets around the world as a global service delivery platform which serves more than 90% of the world’s Internet routes and allows our customers to increase information and application delivery performance while significantly reducing costs. Based on our global delivery platform and the quality of our IBX data centers, we believe we have established a critical mass of customers. As more customers locate in our IBX data centers, it benefits their suppliers and business partners to colocate as well in order to gain the full economic and performance benefits of our services. These partners, in turn, pull in their business partners, creating a “marketplace” for their services. Our global delivery platform enables scalable, reliable and cost-effective colocation, 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 “marketplace” effect. This global delivery platform, combined with our strong financial position, continues to drive new customer growth and bookings as we drive scale into our global business.

Historically, our market has been served by large telecommunications carriers who have bundled their telecommunications products and services with their colocation offerings. The data center services market landscape has evolved to include cloud computing/utility providers, application hosting providers and systems integrators, managed infrastructure hosting providers and colocation providers with over 350 companies providing data center services in the United States alone. Each of these data center services providers can bundle various colocation, interconnection and network services, and outsourced IT infrastructure services. We are able to offer our customers a global platform that supports global reach to 12 countries, proven operational reliability, improved application performance and network choice, and a highly scalable set of services.

Our customer count increased to 3,916 as of December 31, 2010 versus 2,612 as of December 31, 2009, an increase of 50%. This increase was due both to the Switch and Data acquisition in April 2010 and organic growth in our business. Our utilization rate represents the percentage of our cabinet space billing versus net sellable cabinet space available taking into account power limitations. Excluding the impact of the Switch and Data acquisition, our utilization rate decreased to 76% as of December 31, 2010 versus approximately 79% as of December 31, 2009; however, excluding the impact of our IBX data center expansion projects that have opened during the last 12 months, our utilization rate would have increased to approximately 84% as of December 31, 2010. Including the impact of the Switch and Data acquisition, our utilization rate was 74% as of December 31, 2010. Our utilization rate varies from market to market among our IBX data centers across the North America, Europe and Asia-Pacific regions. 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 power our customers draw 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 data centers to support power and cooling needs twice that of previous IBX data centers. We could face power limitations in our centers even though we may have additional physical cabinet capacity available within a specific IBX data 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.

Strategically, we will continue to look at attractive opportunities to grow our market share and selectively improve our footprint and service offerings. As was the case with our recent expansions and acquisitions, our expansion criteria will be dependent on a number of factors such as demand from new and existing customers, quality of the design, power capacity, access to networks, capacity availability in the 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 and acquisitions, the right combination of these factors may be attractive to us. Depending on the circumstances, these transactions may require additional capital expenditures funded by upfront cash payments or through long-term financing arrangements, in order to bring these properties up to

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Equinix standards. Property expansion may be in the form of purchases 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 generally billed on a fixed and recurring basis each month for the duration of their contract, which is generally one to three years in length. Our recurring revenues have comprised more than 90% of our total revenues during the past three years. In addition, during the past three years, in any given quarter, greater than half of our monthly recurring revenue bookings came from existing customers, contributing to our revenue growth.

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 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. However, revenues from installation services are deferred and recognized ratably over the longer of the term of the related contract or expected life of the services. As a percentage of total revenues, we expect non-recurring revenues to represent less than 10% of total revenues for the foreseeable future.

Our North America revenues are derived primarily from colocation and interconnection services while our Europe and Asia-Pacific revenues are derived primarily from colocation and managed infrastructure services.

The largest components of our cost of revenues are depreciation, rental payments related to our leased IBX data centers, utility costs, including electricity and bandwidth, IBX data center employees’ salaries and benefits, including stock-based compensation, repairs and maintenance, 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 expand our existing IBX data centers or open or acquire new IBX data 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 the variable increase related to the growth in consumption by the customer. In addition, the cost of electricity is generally higher in the summer months as compared to other times of the year. To the extent we incur increased utility costs; such increased costs could materially impact our financial condition, results of operations and cash flows. Furthermore, to the extent we incur increased electricity costs as a result of either climate change policies or the physical effects of climate change; such increased costs could materially impact our financial condition, results of operations and cash flows.

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, as well as bad debt expense and amortization of customer contract intangible assets.

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 regional headquarters office leases and some depreciation expense.

Due to our recurring revenue model, and a cost structure which has a large base that is fixed in nature and generally does not grow in proportion to revenue growth, we expect our cost of revenues, sales and marketing expenses and general and administrative expenses to decline as a percentage of revenue over time, although we expect each of them to grow in absolute dollars in connection with our growth. This is evident in the trends noted below in our discussion on our results of operations. However, for cost of revenues, this trend may periodically be impacted when a large expansion project opens or is acquired and before it starts generating any meaningful

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revenue. Furthermore, in relation to cost of revenues, we note that the North America region has a lower cost of revenues as a percentage of revenue than either Europe or Asia-Pacific. This is due to both the increased scale and maturity of the North America region compared to either Europe or Asia-Pacific, as well as a higher cost structure outside of North America, particularly in Europe. While we expect all three regions to continue to see lower cost of revenues as a percentage of revenues in future periods, we expect the trend of North America having the lowest cost of revenues as a percentage of revenue and Europe having the highest to continue. As a result, to the extent that revenue growth outside North America grows in greater proportion than revenue growth in North America, our overall cost of revenues as a percentage of revenues may increase in future periods. Sales and marketing expenses and general and administrative expenses may also periodically increase as a percentage of revenue as we continue to scale our operations to support our growth.

Results of Operations

Our results of operations for the year ended December 31, 2010 include the operations of Switch and Data from May 1, 2010. Our results of operations for the year ended December 31, 2009 include the operations of Upminster from July 22, 2009. Our results of operations for the year ended December 31, 2008 include the operations of Virtu from February 5, 2008.

Constant Currency Presentation

Our revenues and certain operating expenses (cost of revenues, sales and marketing and general and administrative expenses) from our international operations have represented and will continue to represent a significant portion of our total revenues and certain operating expenses. As a result, our revenues and certain operating expenses have been and will continue to be affected by changes in the U.S. dollar against major international currencies such as the British pound, Canadian dollar, Euro, Swiss franc, Australian dollar, Hong Kong dollar, Japanese yen and Singapore dollar. In order to provide a framework for assessing how each of our business segments performed excluding the impact of foreign currency fluctuations, we present year-over-year percentage changes in our revenues and certain operating expenses on a constant currency basis in addition to the historical amounts as reported. Presenting constant currency results of operations is a non-GAAP financial measure and is not meant to be considered in isolation or as an alternative to GAAP results of operations. However, we have presented this non-GAAP financial measure to provide investors with an additional tool to evaluate our operating results. To present this information, our current and comparative prior period revenues and certain operating expenses from entities reporting in currencies other than the U.S. dollar are converted into U.S. dollars at constant exchange rates rather than the actual exchange rates in effect during the respective periods (i.e. average rates in effect for the year ended December 31, 2009 are used as exchange rates for the year ended December 31, 2010 when comparing the year ended December 31, 2010 with the year ended December 31, 2009 and average rates in effect for the year ended December 31, 2008 are used as exchange rates for the year ended December 31, 2009 when comparing the year ended December 31, 2009 with the year ended December 31, 2008). For the year ended December 31, 2010, our North America operations consisted of the U.S. operations and Canadian operations which were added through the Switch and Data acquisition.

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Years Ended December 31, 2010 and 2009

Revenues. Our revenues for the years ended December 31, 2010 and 2009 were generated from the following revenue classifications and geographic regions (dollars in thousands):

North America Revenues. The increase in North America revenues was primarily due to the impact of the Switch and Data acquisition, which resulted in $153.0 million of additional revenue for the year ended December 31, 2010. The following table presents our North America revenues excluding the impact of the Switch and Data acquisition (dollars in thousands):

Excluding the impact of the Switch and Data acquisition, the period over period growth in revenues was primarily the result of an increase in orders from both our existing customers and new customers 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 data centers. Additionally, during the year ended December 31, 2010, we recorded $33.0 million of revenue generated from our recently-opened IBX data centers or IBX data center expansions in the Chicago, Los Angeles, New York, Silicon Valley and Washington, D.C. metro areas.

We expect that our North America revenues, including those of the acquired Switch and Data operations, will continue to grow in future periods as a result of continued growth in the recently-opened IBX data centers or IBX data center expansions and additional expansions currently taking place in the Atlanta and Dallas metro areas, which are expected to open during the first half of 2011. Our estimates of future revenue growth take account of expected reductions in recurring revenues attributed to customer churn or changes or amendments to customers’ contracts.

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Europe Revenues. During the year ended December 31, 2010, our revenues from Germany, the largest revenue contributor in the Europe region for the period, represented approximately 36% of the regional revenues. During the year ended December 31, 2009, our revenues from the United Kingdom, the largest revenue contributor in the Europe region for the period, represented approximately 36% of the regional revenues. Our Europe revenue growth was due to an increase in orders from both our existing customers and new customers 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 data centers. During the year ended December 31, 2010, we recorded approximately $29.9 million of revenue from our recently-opened IBX data centers or IBX data center expansions in the Amsterdam, Dusseldorf, Frankfurt, London, Munich, Paris and Zurich metro areas. Our Europe revenue growth includes a $4.2 million increase in equipment resales for the year ended December 31, 2010. During the year ended December 31, 2010, the U.S. dollar was generally stronger relative to the British pound, Euro and Swiss franc than during the year ended December 31, 2009, resulting in approximately $9.6 million of unfavorable foreign currency impact to our Europe revenues during the year ended December 31, 2010 when compared to average 2009 exchange rates. We expect that our Europe revenues will continue to grow in future periods as a result of continued growth in recently-opened IBX data centers or IBX data center expansions and additional expansions currently taking place in the Amsterdam, Frankfurt, London and Paris metro areas, which are expected to open during 2011. Our estimates of future revenue growth take account of expected reductions in recurring revenues attributed to customer churn or changes or amendments to customers’ contracts.

Asia-Pacific Revenues. Our revenues from Singapore, the largest revenue contributor in the Asia-Pacific region, represented approximately 38% and 36%, respectively, of the regional revenues for the years ended December 31, 2010 and 2009. Our Asia-Pacific revenue growth was due to an increase in orders from both our existing customers and new customers 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 data centers. During the year ended December 31, 2010, we recorded approximately $5.4 million of revenue generated from our IBX center expansions in the Hong Kong and Singapore metro areas. During the year ended December 31, 2010, the U.S. dollar was generally weaker relative to the Australian dollar, Hong Kong dollar, Japanese yen and Singapore dollar than during the year ended December 31, 2009, resulting in approximately $11.2 million of favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2010 when compared to average 2009 exchange rates. We expect that our Asia-Pacific revenues will continue to grow in future periods as a result of continued growth in these recently-opened IBX center expansions and additional expansions currently taking place in the Hong Kong, Singapore, Sydney and Tokyo metro areas which are expected to open during 2011. Our estimates of future revenue growth take account of expected reductions in recurring revenues attributed to customer churn or changes or amendments to customers’ contracts.

Cost of Revenues. Our cost of revenues for the years ended December 31, 2010 and 2009 were split among the following geographic regions (dollars in thousands):

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North America Cost of Revenues. The increase in our North America cost of revenues was primarily due to the impact of the Switch and Data acquisition, which resulted in $109.6 million of additional cost of revenues for the year ended December 31, 2010. Our North America cost of revenues for the years ended December 31, 2010 and 2009 included $150.4 million and $99.3 million, respectively, of depreciation expense, including $39.6 million of depreciation expense from the impact of the Switch and Data acquisition for the year ended December 31, 2010.

Excluding the impact of the Switch and Data acquisition, our North America cost of revenues during the year ended December 31, 2010 was $299.1 million, which represents an increase of 11% from the year ended December 31, 2009. Growth in depreciation expense was primarily due to our IBX center expansion activity. During the year ended December 31, 2009, we revised the estimated useful lives of certain of our property, plant and equipment on a prospective basis effective July 1, 2009 resulting in a $7.1 million decrease in depreciation expense for the year then ended. Excluding depreciation, the increase was primarily due to overall growth related to our revenue growth and costs associated with our expansion projects, including (i) an increase of $7.2 million in rent and facility costs, (ii) an increase of $4.3 million in utility costs as a result of increased customer installations and (iii) a $3.0 million increase in property tax expense. We expect North America cost of revenues to increase as we continue to grow our business.

Europe Cost of Revenues. Europe cost of revenues for the years ended December 31, 2010 and 2009 included $53.7 million and $37.1 million, respectively, of depreciation expense. Growth in depreciation expense was primarily due to our IBX center expansion activity. During the year ended December 31, 2009, we revised the estimated useful lives of certain of our property, plant and equipment on a prospective basis effective July 1, 2009 resulting in a $523,000 decrease in depreciation expense for the year then ended and we recorded a $4.2 million decrease in depreciation expense for the year then ended as an out-of-period adjustment related to incorrectly depreciating certain assets. This $4.2 million out-of-period adjustment represents the correction of errors attributable to the nine months ended September 30, 2009 and the years ended December 31, 2008 and 2007. Excluding depreciation expense, the increase in Europe cost of revenues was primarily the result of costs associated with our expansion projects and overall growth in costs to support our revenue growth, such as (i) $4.2 million of higher compensation expense, including general salaries, bonuses and headcount growth (253 Europe employees as of December 31, 2010 versus 184 as of December 31, 2009), (ii) $3.5 million of costs associated with equipment resales, (iii) an increase of $3.1 million in utility costs arising from increased customer installations and revenues attributed to customer growth, (iv) $2.1 million of higher repair and maintenance costs, (v) $1.3 million of higher rent and facility costs and (vi) $1.2 million of higher third-party services such as security and various consulting services. During the year ended December 31, 2010, the U.S. dollar was generally stronger relative to the British pound, Euro and Swiss franc than during the year ended December 31, 2009, resulting in approximately $6.0 million of favorable foreign currency impact to our Europe cost of revenues during the year ended December 31, 2010 when compared to average 2009 exchange rates. We expect Europe cost of revenues to increase as we continue to grow our business.

Asia-Pacific Cost of Revenues. Asia-Pacific cost of revenues for the years ended December 31, 2010 and 2009 included $28.1 million and $24.4 million, respectively, of depreciation expense. Growth in depreciation expense was primarily due to our IBX center expansion activity. During the year ended December 31, 2009, we revised the estimated useful lives of certain of our property, plant and equipment on a prospective basis effective July 1, 2009 resulting in a $4.4 million decrease in depreciation expense for the year then ended. Excluding depreciation expense, the increase in Asia-Pacific cost of revenues was primarily the result of costs associated with our expansion projects and overall growth in costs to support our revenue growth, such as (i) $6.1 million in higher utility costs, (ii) an increase of $4.6 million of rent and facility costs and (iii) $2.1 million of higher compensation expense, including general salaries, bonuses, stock-based compensation and headcount growth (104 Asia-Pacific employees as of December 31, 2010 versus 85 as of December 31, 2009). During the year ended December 31, 2010, the U.S. dollar was generally weaker relative to the Australian dollar, Hong Kong dollar, Japanese yen and Singapore dollar than during the year ended December 31, 2009, resulting in

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approximately $5.7 million of unfavorable foreign currency impact to our Asia-Pacific cost of revenues during the year ended December 31, 2010 when compared to average 2009 exchange rates. We expect Asia-Pacific cost of revenues to increase as we continue to grow our business.

Sales and Marketing Expenses. Our sales and marketing expenses for the years ended December 31, 2010 and 2009 were split among the following geographic regions (dollars in thousands):