Pulte Homes Selects Siebel CRM OnDemand to Drive Exceptional Customer Service; Nation's Premier New Home Builder Establishes Enterprise-Class Foundation for Sales and Marketing with Leading Hosted CRM Provider

Business Wire, July 26, 2005

SAN MATEO, Calif. -- Siebel Systems, Inc. (Nasdaq:SEBL), the leading provider of customer-facing solutions, today announced that Pulte Homes, the nation's largest home builder by revenue, chose Siebel CRM OnDemand for its hosted CRM solution. Pulte Homes anticipates that Siebel CRM OnDemand will help its business grow through improved market segmentation, increased profitability, and the capacity to sell more homes.

Based in Bloomfield Hills, Mich., Pulte Homes, Inc. is ranked No. 181 on the FORTUNE 500 and has operations in 47 markets and 27 states. In 2004, the company closed 38,612 domestic home sales and generated total revenues of $11.7 billion. During its 55-year history, the company has constructed more than 408,000 homes. In 2004, J.D. Power and Associates named Pulte the inaugural recipient of its Platinum Award for Excellence in Customer Service among America's leading homebuilders. J.D. Power ranked Pulte number one in 14 markets and among the top three in 23 of 25 markets surveyed.

"Pulte Homes required a scalable, enterprise-class CRM solution that could help centralize our sales and marketing processes," said Jerry Batt, CIO, Pulte Homes. "After evaluating a range of offerings, we selected Siebel CRM OnDemand based on Siebel Systems' thought leadership in front-office applications and the company's domain expertise in working with large companies to solve complex business problems. We also valued the breadth and depth of Siebel's world-class toolset, its impressive R&D infrastructure, and its strong built-in analytics capabilities."

Pulte Homes selected Siebel CRM OnDemand to simplify its business and the critical interactions for thousands of sales professionals whose primary focus is to deliver exceptional value to customers. Siebel Systems' strategic vision, customer service, and proven expertise combined to make Pulte Homes' choice a low-risk decision.

Pulte Homes plans to use Siebel CRM OnDemand, Siebel Contact OnDemand, and Siebel Email Marketing.

About Siebel CRM OnDemand

Siebel CRM OnDemand is a hosted CRM offering delivered over the Web and accessible from an Internet browser at a fixed price per user per month. Customers can deploy Siebel CRM OnDemand quickly, easily, and affordably without any up-front IT investments. Hosted by IBM, Siebel CRM OnDemand delivers complete sales, marketing, and service functionality; built-in customer analytics; virtual call center technology; embedded best practices; and world-class hosting services and support. Siebel CRM OnDemand is now available for purchase. For more information, visit www.crmondemand.com.

About Siebel Systems

Siebel Systems is the world's 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.