Siebel Systems Named 2005 CRM Market Leader for Enterprise, Marketing Automation, and Midmarket by CRM Magazine; CEO George Shaheen Named Influential Leader to Watch

Business Wire, Sept 26, 2005

SAN MATEO, Calif. -- Siebel Systems, Inc. (Nasdaq:SEBL), a leading provider of customer-facing solutions, today announced that CRM Magazine has selected Siebel Systems as a Market Leader in the Enterprise, Midmarket, and Marketing Automation CRM categories of the 2005 Market Leader Awards. Siebel CEO George Shaheen was named "One to Watch" in the CRM Influential Leader category. According to CRM Magazine, the 2005 CRM Leader Awards honor the individuals and companies that stand above the rest in customer relationship management as a result of their significant influence, innovation, or accomplishments.

"It's truly an honor to be recognized as a CRM market leader in these important categories," said Patty Azzarello, Senior Vice President and Chief Marketing Officer, Siebel Systems. "This award is a testament to Siebel's continuing commitment to deliver the industry's most comprehensive solutions that empower companies of any size to maximize the value of every customer interaction; deliver exceptional customer experiences; and achieve higher levels of effectiveness, performance, and business results."

The CRM Market Leader award recognizes the top vendors in eight categories, based on criteria such as revenue, revenue growth, market share, reputation for customer satisfaction, depth of functionality, and company direction. The CRM Influential Leader award acknowledges industry luminaries whose innovative ideas, achievements, and strong leadership are influencing both customers and competitors to act.

Siebel Systems' award-winning CRM offerings lead the market because they unleash the potential of every person in an organization to serve customers better and deliver greater value to the bottom line. More than 3.4 million users at over 4,000 of the world's leading organizations across a broad range of industries are reporting increases in revenue, customer satisfaction, and efficiency as a result of using Siebel solutions.

Since its release in November 2001, the company's flagship CRM solution, the Siebel 7 product family, has been adopted by thousands of Siebel customers. The product suite -- which includes the latest version, Siebel 7.8 -- sets the bar for delivering the most functionally complete and highest-performing suite of CRM applications that meet the requirements of the world's largest and most demanding enterprises.

CRM magazine is the leading publication serving the field of CRM. CRM is a business technology magazine written for C-level managers in corporate, sales, marketing, service, and information technology. Together with the magazine's Web site, destinationCRM.com, live Web events, and custom media products, CRM magazine provides business leaders the information they need to reach their strategic objectives through tactical implementation of CRM process and technology. For more information, visit destinationCRM.com. DestinationCRM.com and CRM magazine are properties of CRM Media, LLC.

About Siebel Systems

Siebel Systems is a leading provider of customer-facing solutions that deliver demonstrable business results and long-term competitive advantage. Siebel's multichannel offerings allow organizations to intelligently manage and coordinate all customer interactions across the Web, contact center, field sales/service force, branch/retail network, and indirect and partner distribution channels. Siebel solutions draw upon the company's best-in-class capabilities in customer relationship management (CRM), business intelligence, and customer data integration and can be deployed as licensed software or as a hosted service. Siebel solutions are tailored to the unique needs of 23 industries and incorporate industry-specific business processes, best practices, and business insight. They are the product of more than $2 billion in R&D investments and reflect over 11 years of experience with more than 4,000 organizations. Together with its extensive global network of alliance partners, Siebel provides the people, process, and technology expertise critical in driving business value from the deployment of customer-facing solutions. Over 3 million users worldwide in organizations of all sizes depend on Siebel solutions to deliver dramatic improvements in how they identify, acquire, retain, and serve customers. For more information, visit www.siebel.com.

For more information on Siebel Systems solutions and services, please visit our Web site: CRM -- http://www.siebel.com/crm; OnDemand Solutions -- http://www.crmondemand.com; Industry CRM -- http://www.siebel.com/industry-crm; Call Center and Service -- http://www.siebel.com/call-center; Sales Force Automation -- http://www.siebel.com/sales-force-automation; Marketing Automation -- http://www.siebel.com/marketing-automation; Business Intelligence -- http://www.siebel.com/business-intelligence; Integration Solutions -- http://www.siebel.com/integration-solutions; CRM Services -- http://www.siebel.com/crm-services.> Except for the historical information contained herein, this press release contains forward-looking statements that involve risk or uncertainties. Future operating results of Siebel Systems 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 customer relations, such as the availability of Siebel Systems' products and services, customer implementation of products and services, relationships with customers, third-party vendors and systems integrators, concentration of revenues in a relatively small number of customers, existence of errors or defects in products, ability to successfully manage growth, significant current and expected additional competition and the need to continue to expand product distribution and services offerings. Further information on potential factors that could affect the financial results of Siebel Systems are included in Siebel Systems' 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.