SAN MATEO, Calif., June 29, 2004 -- Siebel Systems, Inc. (Nasdaq:SEBL), a leading provider of business applications software, today announced that Jostens Inc. has expanded its deployment of Siebel Analytics enterprise-wide. Jostens is a leading provider of products, programs and services that help people celebrate important moments, recognize achievements and build affiliations. The company's products include yearbooks, class rings, graduation products, school photography and products for athletic champions and their fans.

Jostens deployed Siebel Analytics to 1,500 employees across its organization. Every knowledge worker in the company, including employees in sales, marketing, finance, and senior management, now relies on Siebel Analytics for their business intelligence needs. More than 50 different analytic applications have been developed and deployed to date using the Siebel Enterprise Analytics Platform.

"With Siebel Analytics we have been able to empower our entire workforce with real-time insight into our customers and our business -- yielding increased customer service, enhanced managerial ability and transparency when cross-selling and up-selling opportunities arise," said Andrew Black, CIO of Jostens.

"Our employees are now enabled with all the departmental and company-wide information they need to make educated, smart decisions and to identify proactive opportunities as well."

The initial deployment at Jostens centered on providing its sales professionals and management better insight into product sales and customer data. Prior to implementing Siebel Analytics, Jostens relied heavily on popular BI tools and a sales planning application that was expensive to build and maintain.

They transitioned to Siebel Analytics for a fraction of the previous cost to maintain, and then added additional analytic applications without absorbing any additional cost. Jostens has now consolidated all of its BI and analytics needs onto the Siebel Enterprise Analytics Platform, providing users across the business with one consistent source for information intelligence across the enterprise.

Siebel business analytics solutions provide complete, real-time, and enterprise-wide insight for all users, enabling fact-based actions and intelligent interaction. Tailored for more than 20 different industries and designed for rapid deployment at a low cost of ownership, Siebel Analytic Applications are pre-built solutions that start with the customer, embrace any existing corporate data source, and are seamlessly integrated with Siebel CRM solutions to increase effectiveness across the entire customer lifecycle. All Siebel Analytic Applications are powered by the Siebel Enterprise Analytic Platform, a family of high performance, highly scalable and highly reliable, next-generation BI platform products that can be used to develop custom analytic solutions to meet any enterprise BI need. Additional information about Siebel Analytics is available at www.siebel.com/products/analytics.

About Jostens

Minneapolis-based Jostens, founded in 1897, is a leading provider of products, programs and services that help people celebrate important moments, recognize achievements and build affiliations. The company's products include yearbooks, class rings, graduation products, school photography and products for athletic champions and their fans.

About Siebel Systems

Siebel Systems, Inc. is a leading provider of business applications software, enabling corporations to sell to, market to, and serve customers across multiple channels and lines of business. With more than 4,000 customer deployments worldwide, Siebel Systems provides organizations with a proven set of industry-specific best practices, CRM applications, market-leading analytics products, and business processes, empowering them to consistently deliver superior customer experiences and establish more profitable customer relationships. Siebel Systems' sales and service facilities are located in more than 30 countries.

Siebel is a trademark of Siebel Systems, Inc. and may be registered in certain jurisdictions. All other product and company names mentioned are the property of their respective owners and are mentioned for identification purposes only.

Except for the historical information contained herein, this press release contains forward-looking statements that involve risks and uncertainties. The success of the agreements, relationships and products described above and the future operating results of Siebel Systems, Inc. may differ from the results discussed or forecasted in the forward-looking statements due to factors that include, but are not limited to, risks associated with the eBusiness software applications market, dependence on the Internet, risks associated with new versions and new products and risks associated with rapid technological change. Further information on potential factors that could affect the financial results of Siebel Systems, Inc. are included in its Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and its other filings with the Securities and Exchange Commission, which are available at www.sec.gov. Siebel Systems assumes no obligation to update the information in this press release.

Siebel Systems, Inc.
Kortney Oliver, 650-477-6293
email: kortney.oliver@siebel.com