San Francisco, California - (Website Hosting Directory) - July 11, 2007 - Microsoft Corporation has assumed leases from IT infrastructure service firm, SAVVIS, Inc., at two adjacent datacenters of Internet gateway services firm, Digital Realty Trust, in Santa Clara. The leases, which expire at the end of 2010, total 300,000 rentable square feet, including approximately 160,000 square feet of raised floor datacenter space.

Michael Foust, Chief Executive Officer of Digital Realty Trust commented, ‘’We are very pleased to welcome Microsoft as a direct tenant at these two Santa Clara facilities and look forward to continuing to build our relationship with them.'’

Arne Josefsberg, General Manager, Infrastructure Services at Microsoft offered, ‘’These new lease structures are an important part of our vision for a globally scaled datacenter infrastructure that will keep pace with user demand for innovative online services. Leasing the space directly from Digital Realty Trust will allow us to gain energy and operational efficiencies, helping us continue to run some of the largest services in the world. We appreciate Digital Realty Trust’s commitment to and focus on technology infrastructure properties and look forward to working with them in future.'’

Digital Realty Trust, Inc. owns, acquires, repositions and manages technology-related real estate. Digital Realty Trust’s 62 properties, excluding one property held in an unconsolidated joint venture, contain applications and operations critical to the day-to-day operations of technology industry tenants and corporate enterprise datacenter tenants. Comprising approximately 11.4 million rentable square feet, including 1.7 million square feet of space held for redevelopment, Digital Realty Trust’s portfolio is located in 25 markets throughout North America and Europe.

SAVVIS, Inc. is a global IT infrastructure service firm for business applications. With an IT services platform spanning North America, Europe, and Asia, SAVVIS has over 5,000 enterprise customers and endeavors to deliver secure, reliable, and scalable hosting, network, and application services. The solutions are designed to enable customers to focus on core business while SAVVIS ensures the quality of IT systems and operations. SAVVIS’ goal is to enlist a strategic approach, combining virtualization technology, a global network with 25 data centers, and automated management and provisioning systems.

Founded in 1975, Microsoft is a worldwide leader in software, services and solutions designed to help people and businesses accelerate. Microsoft, BizTalk, Microsoft Dynamics and Windows Live are trademarks of the Microsoft group of companies. The names of actual companies and products mentioned herein may be the trademarks of their respective owners.

For more information about Digital Realty Trust, please visit: www.digitalrealtytrust.com.

To learn more about SAVVIS, please visit: www.savvis.net.

For more information about Microsoft, please visit: www.microsoft.com.