SANTA CLARA, CALIF. - January 11th, 2005 - Sun Microsystems, Inc. (NASDAQ: SUNW) today announced that it has completed the acquisition of SevenSpace, a privately-held company based in Ashburn, Va. SevenSpace services are expected to enhance Sun's Managed Services offerings to include heterogeneous environments, adding support for Hewlett-Packard's legacy HP-UX and IBM's AIX systems, along with Microsoft Windows and Red Hat Linux.

"The integration of SevenSpace's technology into our existing remote services offerings will greatly improve our ability to enable customers to stay focused on their competitive advantage, while managing the unique demands of their businesses," said Marissa Peterson, executive vice president, Sun Services, Worldwide Operations and Chief Customer Advocate. "Sun can now offer Managed Services with improved service levels in less time than our competitors and for less cost to our customers."

SevenSpace delivers remote system monitoring and management with high levels of operational efficiency and committed service levels. The services provided include rapid identification, assessment, notification and resolution of system events as well as change control all within a best-practices framework. The services are designed to improve customer environment stability and availability while potentially reducing IT operations costs.

SevenSpace manages enterprise applications, including SAP, Oracle e-business suites, PeopleSoft and Siebel; databases, including Oracle and Microsoft SQL Server; operating systems, including Solaris OS, Windows and Linux platforms; and network devices.

SevenSpace has more than 100 customers in industries such as financial services, government, manufacturing and retail. It will be offered through Sun's Managed Services portfolio and sold through direct and partner channels. SevenSpace will become an integral part of Sun's Customer Networked Services organization under Peterson's leadership.

About Sun Microsystems, Inc.

Since its inception in 1982, a singular vision -- "The Network Is The Computer" -- has propelled Sun Microsystems, Inc. (Nasdaq: SUNW) to its position as a leading provider of industrial-strength hardware, software and services that make the Net work. Sun can be found in more than 100 countries and on the World Wide Web at http://sun.com

Sun, Sun Microsystems, the Sun logo, Solaris and The Network Is The Computer are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries.

This press release contains forward-looking statements that involve risks and uncertainties. These forward-looking statements include statements regarding future results or financial performance of Sun Microsystems, Inc., including statements relating to the acquisition of SevenSpace, giving customers improved service levels at lower costs, broadening Sun's Managed Services offerings, enabling high levels of operational efficiency and committed service levels, rapid identification, acknowledgment, assessment and resolution of system events, improvement of environment stability and availability, implementation in a matter of days, SevenSpace becoming an integral part of Sun's Services organization under the leadership of Marissa Peterson and SevenSpace providing key elements of Sun's connected customer infrastructure. Such statements are just predictions and involve risks and uncertainties such that actual results and performance may differ materially. Factors that might cause such a difference include the closing of the acquisition, successful integration of SevenSpace and its products, services, customers and technologies into Sun, developing and marketing new products and services and obtaining new customers, lack of success in the timely development, production and acceptance of new products and services and in technical advancements, Sun's inability to compete successfully in the highly competitive and rapidly changing marketplace, failure to retain key employees, cancellation or delay of projects, increased competition and continued adverse general economic conditions in the U.S. and internationally. These and other risks are detailed from time to time in Sun's periodic reports that are filed with the Securities and Exchange Commission, including Sun's annual report on Form 10-K for the fiscal year ended June 30, 2004 and our quarterly report on Form 10-Q for the fiscal quarterS ended September 26, 2004 and December 26, 2004.