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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

For the fiscal year ended December 31, 2011

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.  ¨

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 $4.7 billion. As of January 31, 2012, a total of 46,656,593 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 2012 Annual Meeting of Stockholders, which is expected to be filed not later than 120 days after the registrant’s fiscal year ended December 31, 2011. 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, 2011

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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, Inc. 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. Platform Equinix connects more than 4,000 enterprises, cloud, digital content and financial companies, including more than 690 network service providers, to help them grow their businesses, improve application performance and protect their vital digital assets. Equinix operates in 38 strategic markets across the Americas, Europe, the Middle-East and Africa (“EMEA”) 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.

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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, 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 99 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 who 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

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within one location, using simple direct connections. Their ability to peer across the room or a data center campus, instead of across a metro area, has increased the scalability of their operations while decreasing network costs.

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, multiprotocol label switching (MPLS), virtual private networks (VPNs) 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. Industry analysts forecast growth in the colocation market to be in excess of 15% over the next three years.

Equinix Value Proposition

More than 4,000 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 platform 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 690 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 Bloomberg, Facebook, The GAP, 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 2011.

In 2011, 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 continue to focus on our 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 efficient and innovative Internet and Ethernet exchange platforms 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 services, content and digital media, financial services, enterprises and IT services 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. In April 2011, we successfully acquired an approximately 53% indirect, controlling equity interest in ALOG Data Centers do Brazil S.A. This extended our presence into the Sao Paulo and Rio de Janeiro markets in Brazil.

Our strategy is to continue to grow in select existing markets and possibly expand to additional markets where demand and financial return potential warrant. We expect to execute this expansion strategy in a cost-effective and 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.

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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, 2011, we had more than 4,000 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, 2011, 2010 or 2009.

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 certain select markets, 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.

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.

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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, cloud services providers, and many important financial services and e-commerce industry leaders 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 the central switching fabric of our Equinix Internet Exchange 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 Metro Connect. 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. Metro Connect allows customers to seamlessly interconnect between IBX data centers at capacities up to an OC-192, or 10 gigabits per second level. Metro Connect 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.

Ethernet Exchange Services. We offer the Ethernet Exchange service which is similar to the Equinix Internet Exchange in 17 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 to the high growth Ethernet industry. The service is priced per IBX data center with an initial fee and a monthly recurring charge.

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Managed IT Infrastructure Services

With the continued growth in Internet traffic, networks, cloud providers, service providers, enterprises and content providers are challenged to deliver fast and reliable service, while lowering costs. With more than 690 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 Americas sales offices are located in Boston, Chicago, Los Angeles, New York, Reston, Virginia, Silicon Valley, and out of the ALOG data centers in Sao Paulo and Rio de Janeiro. Our EMEA sales offices are located in Amsterdam, Dusseldorf, Frankfurt, Geneva, London, Munich, Paris and Zurich. Our Asia-Pacific sales offices are located in Hong Kong, Singapore, Sydney and Tokyo.

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.

Marketing. To support our sales effort and to actively promote our brand in the Americas, 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

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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, 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 VoIP telephone networks, perform financial 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:

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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 organized 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, e-Shelter and Sentrum.

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.

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 Americas, EMEA 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.

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Our Business Segment Financial Information

We currently operate in three reportable segments, comprised of our Americas, EMEA 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, 2011, we had 2,709 employees. We had 1,763 employees based in the Americas, 570 employees based in EMEA and 376 employees based in Asia-Pacific. Of those employees, 1,270 were in engineering and operations, 475 were in sales and marketing and 964 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 Switch & Data Facilities Company, Inc. in 2010. We also acquired, with RW Brasil Fundo de Investimento em Participações, approximately 90% of the outstanding capital stock of ALOG Data Centers do Brasil S.A. in 2011, which resulted in Equinix acquiring an indirect, controlling interest in ALOG of approximately 53%. 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. 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 potential risks, including:

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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 of 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.

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

We have a significant amount of debt. Notwithstanding our intention to become free cash flow positive in 2013, we may not achieve such goal and may need to incur additional debt to support our growth. Additional

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debt may also be incurred to fund future acquisitions. As of December 31, 2011, our total indebtedness was approximately $3.1 billion, our stockholders’ equity was $2.0 billion and our cash and investments totaled $1.1 billion. Some of our debt contains covenants which may limit our operating flexibility. In addition to our substantial debt, we lease a majority of our IBX centers and certain equipment under non-cancelable lease agreements, the majority of which are accounted for as operating leases. As of December 31, 2011, our total minimum operating lease commitments under those lease agreements, excluding potential lease renewals, was approximately $988.1 million, which represents off-balance sheet commitments.

Our substantial amount of debt and related covenants, and our off-balance sheet commitments, 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. 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.

Global economic uncertainty and debt issues could adversely impact our business and financial condition.

The varying pace of global economic recovery continues to create uncertainty and unpredictability and add risk to our future outlook. Sovereign debt issues and economic uncertainty in Greece, Portugal, Spain, Ireland and other countries in Europe and around the world raise concerns in markets where we operate and which are important to our business. Issues in Europe, for example, could lead to the reintroduction of national currencies in some European countries or the abandonment of the euro, which could be disruptive to our operations. A global economic downturn could also result in churn in our customer base, reductions in sales of our products and services, longer sales cycles, slower adoption of new technologies and increased price competition, adversely affecting our liquidity. If customers in EMEA have difficulty paying us, due to the current European debt crisis or a global economic downturn generally, we may also be required to further increase our allowance for doubtful

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accounts, which would negatively impact our results. 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. 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, 2011, the closing sale price of our common stock on the NASDAQ Global Select Market has ranged from $82.00 to $136.55 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 us or others, or speculations about our future plans, may also have a significant impact on the market price of our common stock. These 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 have also significantly expanded our sales force in the past year. 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.

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’ infrastructure and equipment located in our IBX data centers. While we own certain of our IBX data centers,

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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 a result of a problem at one of our IBX data centers. 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 one of the high hazard zones for earth movement which include, but are not limited to, California, Japan, the New Madrid Seismic Zone and the Pacific Northwest Seismic Zone, 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 and in other high hazard zones we have elected to self-insure. In the event of a large earthquake in any of these locations, 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 Americas region, Asia-Pacific region, EMEA 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

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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, lease a new facility 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. Any related construction requires us to carefully select and rely on the experience of one or more designers, general contractors, and associated subcontractors during the design and construction process. Should a designer, general contractor, 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/or other negative impacts to our expected returns.

Site selection is also a critical factor in our expansion plans. There may not be suitable properties available in our markets with the necessary combination of high power capacity and fiber connectivity, or selection may be limited. Thus, while we may prefer to locate new IBX data centers adjacent to our existing locations it may not always be possible. 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 international environmental and health and safety laws and regulations, including those relating to the generation, storage, handling and disposal of hazardous substances and wastes. Certain of these laws and regulations also impose joint and several liability, without regard to fault, for investigation and cleanup costs on current and former owners and operators of real property and persons who have disposed of or released hazardous substances into the environment. Our operations involve the use of hazardous substances and materials such as petroleum fuel for emergency generators, as well as batteries, cleaning solutions and other materials. In addition, we lease, own or operate real property at which hazardous substances and regulated materials have been used in the past. At some of our locations, hazardous substances or regulated materials are known to be present in soil or groundwater and there may be additional unknown hazardous substances or regulated materials present at sites we own, operate or lease. At some of our locations, there are land use restrictions in place relating to earlier environmental cleanups that do not materially limit our use of the sites. To the extent any hazardous substances or any other substance or material must be cleaned up or removed from our property, we may be responsible under applicable laws, regulations or leases for the removal or cleanup of such substances or materials, the cost of which could be substantial.

In addition, we are subject to environmental, health and safety laws regulating air emissions, storm water management and other issues arising in our business. While these obligations do not normally impose material costs upon our operations, unexpected events, equipment malfunctions and human error, among other factors, can lead to violations of environmental laws, regulations or permits. 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 (“GHG”) emissions that are linked to global climate change. Regulations to limit GHG 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,

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implement some form of regulation or taxation to reduce or mitigate 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 became 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 Prevention of Significant Deterioration (“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 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 establishing a mandatory emissions reporting program. On October 27, 2011, the California Air Resources Board adopted final regulations establishing a cap-and-trade program to implement AB-32, which will establish an auction to allocate allowances for GHG emissions, and will establish a minimum price for such allowances. This cap-and-trade regulation took effect January 1, 2012, and will require allowances to be surrendered for emissions of GHGs commencing January 1, 2013. This first phase of the cap-and-trade program 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. In 2015, a second phase of the program will begin, imposing allowance obligations upon suppliers of most forms of fossil fuels, which will increase the costs of our petroleum fuels used for transportation and emergency generators.

Federal, regional, state and international regulatory programs to address climate change 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.

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 impose new or unexpected costs, our business, results of operations or financial condition may be adversely affected.

If we are unable to recruit or retain qualified personnel, our business could be harmed.

We must continue to identify, hire, train and retain IT professionals, technical engineers, operations employees, and sales, marketing, finance and senior management personnel who maintain relationships with our

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customers and who can provide the technical, strategic and marketing skills required for our company to grow. There is a shortage of qualified personnel in these fields, and we compete with other companies for the limited pool of talent. The failure to recruit and retain necessary personnel, including but not limited to members of our executive team, could harm our business and our ability to grow our company.

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

We must be able to differentiate our IBX data centers and product offerings from those of our competitors. In addition to competing with other neutral colocation providers, we compete with traditional colocation providers, including telecom companies, carriers, internet service providers and managed services providers, and with large real estate investment trusts, or REITs, who also operate in our market, and may enjoy a cost advantage in providing services similar to those provided by our IBX data centers. We may experience competition from our landlords, some of which are REITs, which could also reduce the amount of space available to us for expansion in the future. 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, blurring the line between retail and wholesale space. We may also face competition from existing competitors or new entrants to the market seeking to replicate our global IBX data center concept by building or acquiring data centers, offering colocation on neutral terms or by replicating our strategy and messaging. Finally, customers may also decide it is cost-effective for them to build out their own data centers. Once customers have an established data center footprint, either through a relationship with one of our competitors or through in-sourcing, it may be extremely difficult to convince them to relocate to our IBX data centers.

Some of our competitors may adopt aggressive pricing policies, especially if they are not highly leveraged or have lower return thresholds that we do. As a result, we may suffer from pricing pressure that would adversely affect our ability to generate revenues. Some of these competitors may also provide our target customers with additional benefits, including bundled communication services or cloud services, and may do so in a manner that is more attractive to our potential customers than obtaining space in our IBX data centers. Competitors could also operate more successfully or form alliances to acquire significant market share.

Failure to compete successfully may materially adversely affect our financial condition, cash flows and results of operations.

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, from the tornados on the U.S. east coast in 2004, and relating to the earthquake and tsunami in Japan in 2011, 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.

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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 control over financial reporting. Although we received an unqualified opinion regarding the effectiveness of our internal control over financial reporting as of December 31, 2011, 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 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, 2011, 2010 and 2009, we recognized 40%, 38% and 39%, respectively, of our revenues outside the U.S. We currently operate outside of the U.S. in Canada, Brazil, and in the EMEA and Asia-Pacific regions.

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 outside of the U.S. 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:

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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. 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.

Economic uncertainty in developing markets could adversely affect our revenue and earnings.

We conduct business or are contemplating expansion in developing markets with economies that tend to be more volatile than those in the United States and Western Europe. The risk of doing business in developing markets such as China, Brazil, India, Russia, United Arab Emirates and other economically volatile areas, could adversely affect our operations and earnings. Such risks include the financial instability among customers in these regions, political instability, fraud or corruption and other non-economic factors such as irregular trade flows that need to be managed successfully with the help of the local governments. In addition, commercial laws in some developing countries can be vague, inconsistently administered and retroactively applied. If we are deemed not to be in compliance with applicable laws in developing countries where we conduct business, our prospects and business in those countries could be harmed, which could then have a material adverse impact on our results of operations and financial position. Our failure to successfully manage economic, political and other risks relating to doing business in developing countries and economically and politically volatile areas could adversely affect our business.

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

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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.

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

As of December 31, 2011, our accumulated deficit was $255.1 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 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.

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 or our customers’ operations. As we provide assurances to our customers that we provide the highest level of security, such a compromise could be particularly harmful to our brand and reputation. 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 able to determine the extent to which 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, grow 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 Item 8 of 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 is considering proposed Internet rules and regulation of broadband that may result in material changes in the regulations and

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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. The CFTC is also considering regulation of companies that use automated and high-frequency trading systems. Any 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.

If customers combine businesses, they may require less colocation space, which could lead to churn in our customer base. Regional competitors may also consolidate to become a global competitor. Consolidation of our customers and/or our competitors may present a risk to our business model and have a negative impact on our revenues.

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:

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.

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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 centers there. Our EMEA headquarters office is located in London, U.K. and our regional sales offices in EMEA are based in our IBX data centers in EMEA. We have entered into leases for certain of our IBX data centers in Atlanta, Georgia; Buffalo and New York, New York; Dallas, Texas; Chicago, Illinois; Cleveland, Ohio; Englewood, Colorado; Indianapolis, Indiana; Los Angeles, Palo Alto, San Jose, Santa Clara and Sunnyvale, California; Miami and Tampa, Florida; Nashville, Tennessee; Newark, North Bergen and Secaucus, New Jersey; Philadelphia and Pittsburgh, Pennsylvania; Phoenix, Arizona; Reston and Vienna, Virginia; Seattle, Washington; Southfield, Mississippi; St. Louis, Missouri; Toronto, Canada; Waltham, Massachusetts and Rio De Janeiro and Sao Paolo, Brazil in the Americas region; Hong Kong; Singapore; Sydney, Australia and Tokyo, Japan in the Asia-Pacific region; London, U.K.; Paris, France; Frankfurt, Munich and Dusseldorf, Germany; Zurich and Geneva, Switzerland and Enschede and Zwolle, Netherlands in the EMEA region. We own certain of our IBX data centers in Ashburn, Virginia; Chicago, Illinois; Los Angeles and San Jose, California; Paris, France; 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.

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 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. The settlement approval was appealed to the United States Court of Appeals for the Second Circuit. One appeal was dismissed and the second appeal was remanded to the District Court to determine if the appellant is a class member with standing to appeal. The District Court ruled that the appellant lacked standing. The appellant appealed the District Court’s decision to the Second Circuit. On January 9, 2012, appellant entered into a settlement agreement with counsel for the plaintiff class pursuant to which he dismissed his appeal with prejudice. As a result, the settlement among the parties in the IPO Litigation is final and the case is concluded.

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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 Hawai’i, 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 added 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. In January 2011, one group of co-defendants (Morgan Stanley and certain persons and entities affiliated with it) entered into a separate settlement with plaintiffs. The trial court determined that the settlement was made in “good faith” in accordance with Hawai‘i statutory law, and certain non-settling defendants (including Equinix) filed an appeal from that order before the Intermediate Court of Appeals. That appeal has been stayed pending resolution of plaintiffs’ appeal before the Hawai‘i Supreme Court. In August 2011, another group of co-defendants (UBS AG and UBS Capital Asia Pacific Limited Fund) entered into a separate settlement with plaintiffs. The parties stipulated that the ultimate disposition of the Morgan Stanley “good faith” determination will apply to the UBS settlement. In December 2011, the parties reached agreement in principle on a global settlement which provides, among other things, that all claims and proceedings against all defendants will be dismissed with prejudice. It is anticipated that the parties will enter into a formal settlement agreement. In the event that the settlement is not finalized for any reason, we continue to 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.

Alleged Class Action and Shareholder Derivative Actions

On March 4, 2011, an alleged class action entitled Cement Masons & Plasterers Joint Pension Trust v. Equinix, Inc., et al., No. CV-11-1016-SC, was filed in the United States District Court for the Northern District of California, against Equinix and two of our officers. The suit asserts purported claims under Sections 10(b) and

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20(a) of the Securities Exchange Act of 1934 for allegedly misleading statements regarding our business and financial results. The suit is purportedly brought on behalf of purchasers of our common stock between July 29, 2010 and October 5, 2010, and seeks compensatory damages, fees and costs. Defendants filed a motion to dismiss on November 7, 2011 and a hearing on the motion to dismiss is set for February 24, 2012.

On March 8, 2011, an alleged shareholder derivative action entitled Rikos v. Equinix, Inc., et al., No. CGC-11-508940, was filed in California Superior Court, County of San Francisco, against Equinix (as a nominal defendant), the members of our board of directors, and two of our officers. The suit is based on allegations similar to those in the federal securities class action and, allegedly on our behalf, asserts purported state law causes of action against the individual defendants for breach of fiduciary duty, abuse of control, gross mismanagement, waste of corporate assets and unjust enrichment. The suit seeks, among other things, compensatory and treble damages, restitution and other equitable relief, and fees and costs. By agreement, this case has been temporarily stayed pending the outcome of Defendants’ motion to dismiss in the class action and, pursuant to that agreement, defendants need not respond to the complaint at this time.

On May 20, 2011, an alleged shareholder derivative action entitled Stopa v. Clontz, et al., No. CV-11-2467-SC was filed in the United States District Court for the Northern District of California, purportedly on behalf of Equinix, against the members of our board of directors. The suit is based on allegations similar to those in the federal securities class action and the state court derivative action, and asserts causes of action against the individual defendants for breach of fiduciary duty for allegedly disseminating false and misleading information, breach of fiduciary duty for allegedly failing to maintain internal controls, unjust enrichment, abuse of control, gross mismanagement and waste of corporate assets. On June 10, 2011, the court signed an order relating this case to the federal securities class action. Plaintiffs filed an amended complaint on December 14, 2011. By agreement, all other proceedings in this case have been temporarily stayed pending the outcome of Defendants’ motion to dismiss in the class action.

Due to the inherent uncertainties of litigation, we cannot accurately predict the ultimate outcome of these matters, and 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.

Not applicable.

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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, 2012, we had 46,656,593 shares of our common stock outstanding held by approximately 245 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, 2011, we did not issue or sell any securities on an unregistered basis.

Purchases of Equity Securities by Issuer

The following table sets forth a summary of our stock repurchases under our share repurchase program for the three months ended December 31, 2011:

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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, 2006 and December 31, 2011 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, 2006 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, 2011 and the consolidated balance sheet data as of December 31, 2011, 2010, 2009, 2008 and 2007 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, 2011 and as of December 31, 2011 and 2010, 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 2011 and April 2010, we completed our acquisition of an indirect controlling interest in ALOG Data Centers do Brasil S.A. and acquisition of Switch & Data Facilities Company, Inc., respectively. For further information on these acquisitions, 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:

On April 25, 2011, as more fully described in Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, Zion RJ Participações S.A., referred to as Zion, a Brazilian joint-stock company controlled by our wholly-owned subsidiary and co-owned by RW Brasil Fundo de Investimento em Participações, a subsidiary of Riverwood Capital L.P., referred to as Riverwood, completed the acquisition of approximately 90% of the outstanding capital stock of ALOG Data Centers do Brasil S.A. and its subsidiaries, referred to as ALOG, which resulted in Equinix acquiring an indirect, controlling interest in ALOG of approximately 53%. This transaction is referred to as the ALOG acquisition.

In July 2011, we issued $750.0 million aggregate principal amount of 7.00% senior notes due July 15, 2021, which is referred to as the 7.00% senior notes offering. We intend to use the net proceeds from the 7.00% senior notes offering for general corporate purposes, including the funding of our expansion activities, and the repayment of our 2.50% convertible subordinated notes due April 15, 2012.

In November 2011, our board of directors, referred to as the board, approved a share repurchase program to repurchase up to $250.0 million in value of our common stock in the open market or private transactions through December 31, 2012, which is referred to as the share repurchase program. The share repurchase program was designed to return value to our stockholders and minimize dilution from stock issuances.

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 data centers in 38 markets around the world for the safeguarding of their critical IT

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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, 2011, 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, Rio De Janeiro, Sao Paulo, Seattle, Silicon Valley, St. Louis, Tampa, Toronto and Washington, D.C. metro areas in the Americas region; France, Germany, Italy, the Netherlands, Switzerland and the United Kingdom in the Europe, Middle East, Africa (EMEA) region; and Australia, Hong Kong, Japan, China and Singapore in the Asia-Pacific region.

We leverage our global data centers in 38 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.

Excluding the ALOG acquisition, our customer count increased to 4,724 as of December 31, 2011 versus 4,300 as of December 31, 2010, an increase of 10%. This increase was due to 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 ALOG acquisition, our utilization rate increased to approximately 80% as of December 31, 2011 versus approximately 74% as of December 31, 2010; however, excluding the impact of our IBX data center expansion projects that have been open for less than four full quarters, our utilization rate would have increased to approximately 85% as of December 31, 2011. Our utilization rate varies from market to market among our IBX data centers across the Americas, EMEA 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.

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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 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. Additionally, revenue from contract settlements, when a customer wishes to terminate their contract early, is generally recognized on a cash basis, when no remaining performance obligations exist, to the extent that the revenue has not previously been recognized. As a percentage of total revenues, we expect non-recurring revenues to represent less than 10% of total revenues for the foreseeable future.

Our Americas revenues are derived primarily from colocation and interconnection services while our EMEA 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.

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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 revenue. Furthermore, in relation to cost of revenues, we note that the Americas region has a lower cost of revenues as a percentage of revenue than either EMEA or Asia-Pacific. This is due to both the increased scale and maturity of the Americas region compared to either EMEA or Asia-Pacific, as well as a higher cost structure outside of the Americas, particularly in EMEA. 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 the Americas having the lowest cost of revenues as a percentage of revenue and EMEA having the highest to continue. As a result, to the extent that revenue growth outside the Americas grows in greater proportion than revenue growth in the Americas, 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.

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 Brazilian reais, 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 period-over-period 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, 2010 are used as exchange rates for the year ended December 31, 2011 when comparing the year ended December 31, 2011 with the year ended December 31, 2010 and 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).

Results of Operations

Our results of operations for the year ended December 31, 2011 include the operations of ALOG from April 25, 2011. Our results of operations for the year ended December 31, 2010 include the operations of Switch & Data Facilities Company, Inc., which is referred to as Switch and Data, from May 1, 2010.

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Years Ended December 31, 2011 and 2010

Revenues. Our revenues for the years ended December 31, 2011 and 2010 were generated from the following revenue classifications and geographic regions (dollars in thousands):

Americas Revenues. Growth in Americas revenues was primarily due to (i) additional revenues resulting from acquisitions, including $98.0 million of incremental revenue from Switch and Data ($251.0 million of full-year revenue contributions from Switch and Data during the year ended December 31, 2011 as compared to $153.0 million of partial-year revenue contributions during the year ended December 31, 2010) and $46.9 million of additional revenue resulting from the ALOG acquisition, (ii) $8.9 million of revenue generated from our recently-opened IBX data centers or IBX data center expansions in the Chicago and Dallas metro areas and (iii) 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. We expect that our Americas revenues will continue to grow in future periods as a result of continued growth in the recently-opened IBX data center expansions and additional IBX data center expansions currently taking place in the Dallas, New York, Seattle and Washington, D.C. metro areas, which are expected to open during 2012 and 2013. Our estimates of future revenue growth take account of expected changes in recurring revenues attributable to customer bookings, customer churn or changes or amendments to customers’ contracts.

The following table presents our Americas revenues excluding the impact of acquisitions (dollars in thousands):

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EMEA Revenues. During the year ended December 31, 2011, our revenues from the United Kingdom, the largest revenue contributor in the EMEA region for the period, represented approximately 36% of the regional revenues. During the year ended December 31, 2010, our revenues from Germany, the largest revenue contributor in the EMEA region for the period, represented approximately 36% of the regional revenues. Our EMEA revenue growth was due to (i) $30.0 million of revenue from our recently-opened IBX data center expansions in the Amsterdam, London and Paris metro areas and (ii) 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, 2011, the U.S. dollar was generally weaker relative to the British pound, Euro and Swiss Franc than during the year ended December 31, 2010, resulting in approximately $17.3 million of favorable foreign currency impact to our EMEA revenues during the year ended December 31, 2011 on a constant currency basis. We expect that our EMEA revenues will continue to grow in future periods as a result of continued growth in the recently-opened IBX data center expansions and additional IBX data center expansions currently taking place in the Amsterdam, Frankfurt, London and Paris metro areas, which are expected to open during 2012. Our estimates of future revenue growth take into account expected changes in recurring revenues attributable to customer bookings, 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 40% and 38%, respectively, of the regional revenues for the years ended December 31, 2011 and 2010. 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, 2011, we recorded approximately $13.0 million of revenue generated from our recently-opened IBX center expansions in the Hong Kong, Singapore, Sydney and Tokyo metro areas. During the year ended December 31, 2011, 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, 2010, resulting in approximately $16.2 million of favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2011 on a constant currency basis. 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 data center expansions and the additional IBX data center expansion currently taking place in the Singapore and Sydney metro areas which is expected to open during 2012. Our estimates of future revenue growth take into account expected changes in recurring revenues attributable to customer bookings, or changes or amendments to customers’ contracts.

Cost of Revenues. Our cost of revenues for the years ended December 31, 2011 and 2010 were split among the following geographic regions (dollars in thousands):