Compuware and Sun Microsystems Announce Strategic Relationship to Provide Technology and Services for the Sun ONE Architecture

Helps Enterprises Speed Application Development and Deployment

FARMINGTON HILLS, Mich. and PALO ALTO, Calif. -- June 6, 2001 -- Compuware Corporation (Nasdaq: CPWR) and Sun Microsystems (Nasdaq: SUNW) are working together to further the adoption of Java™ technology in the enterprise as the vehicle for creating, assembling and deploying web services within Sun's Open Net Environment (Sun ONE). Sun ONE is a comprehensive architecture for the development and delivery of web services across multiple IP-based networks, including web and wireless. The strategic relationship includes joint product development, marketing and professional services initiatives.

"By working with Compuware, we can offer our enterprise customers integrated solutions to help increase application performance and improve time to market," said Shahram Moradpour, Director, Internet Infrastructure Market Development at Sun Microsystems, Inc. "This relationship brings together Compuware's application life cycle expertise with Sun's leadership in delivering standards-based technologies for building smart web services for the Sun ONE platform."

As part of this agreement, Compuware has integrated its OptimalJ application development tool with the Forte™ for Java™ integrated development environment. Together with Sun, Compuware will market the resulting solutions. Compuware has chosen the iPlanet™ Application Server as its primary application server and will be licensing the iPlanet Application Server for inclusion in its application development and e-business solutions. Sun and Compuware will work together to enhance integration with Forte tools, iPlanet e-commerce solutions, the Solaris™ Operating Environment (Solaris OE) and other Java technology-related specifications for Compuware's automated software quality, production readiness and performance management product lines. As a result, customers implementing e-business applications will have an integrated application tools platform from Compuware for Sun technologies.

Compuware's Professional Services Division is already working with Sun to support the development and deployment of e-business applications. Additionally, Compuware's professional services staff is experienced in a broad range of services and technologies including expertise in Java and Sun technologies.

"Sun ONE provides a powerful architecture for businesses that intend to create web services," said Kevin Cowsill, Senior Vice President, Compuware Corporation. "By working in this environment to simplify application development, raise quality and improve performance, we will help our customers deploy a new generation of business applications, through the adoption of this platform and architecture."

About Sun ONE

Sun™ Open Net Environment (Sun ONE) is one of the industry's most comprehensive offerings to deliver Web services today and includes an architecture and roadmap based on open standards, such as Java and XML technologies, to take advantage of the new generation of smart Web services and beyond. Smart Web services are enhanced Web services with a level of intelligence based on context that spans multiple networks beyond the Web, and provide a richer experience for both enterprises and end-users. Sun ONE will simplify the way in which both Web and open smart services are created, assembled and deployed -- benefiting enterprises with better business-wide productivity, developers with faster time-to-service and increased market opportunity, and consumers with an enriched user experience. More information about Sun ONE can be found at www.sun.com/software/sunone 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 power the Internet and allow companies worldwide to take their businesses to the nth. With $19.2 billion in annual revenues, Sun can be found in more than 170 countries and on the World Wide Web at http://sun.com.

Compuware Corporation

With fiscal 2001 revenues of more than $2 billion, Compuware Corporation provides business value through software and professional services that optimize productivity and reduce costs across the application life cycle. Meeting the rapidly changing needs of businesses of all sizes, Compuware's market-leading solutions improve the quality, ease the integration and enhance the performance of distributed, e-business and enterprise software. Compuware employs approximately 15,000 information technology professionals worldwide. For more information about Compuware, please contact the corporate offices at 800-521-9353. You may also visit Compuware on the World Wide Web at http://www.compuware.com.