Postbank NV Standardizes on Siebel eBusiness Applications; Leading Dutch Retail Bank Unites Sales, Service, and Marketing Teams to Enhance Customer Satisfaction.

Business Editors/High-Tech Writers

SAN MATEO, Calif.--(BUSINESS WIRE)--Dec. 21, 2000

Siebel Systems, Inc. (Nasdaq:SEBL), the world's leading supplier of eBusiness applications software, today announced that Postbank NV, a leading retail bank in the Netherlands, will standardize on Siebel eBusiness Applications. By creating a single, comprehensive multichannel customer information management system, Siebel Systems will afford Postbank a unified view of each customer across multiple accounts, so that Postbank representatives can provide consistently superior, personalized service across multiple channels of communication and increase customer satisfaction.

With more than 7 million account holders and a market share of 42% in the Dutch retail payments market, Postbank is one of the largest financial service providers in the Netherlands. Postbank is a modern and independent financial service provider which is leading in the supply of a complete range of services. Via the Giro account, Postbank offers a wide range of services in the field of payments, savings, loans, investments, insurance and mortages. Postbank provides these services through a number of channels including branch offices, phone, mail and the Internet. The bank is a subsidiary of ING Group, the global Dutch financial institution.

While Postbank customers have had the flexibility to conduct business through multiple channels, the bank has maintained customer records in disparate product-related systems. Without a single repository for complete profiles of each customer encompassing multiple services, and without the means to share that information, Postbank sales and service professionals have relied on frequent telephone and email contact with one another to fulfill customer requests. As a result, customers might have to wait for a response to an inquiry, despite the availability of the Web and other channels of communication with the bank. Meanwhile, Postbank marketing professionals have undertaken meticulous cross-referencing of records in various systems, to confirm all of the services each customer uses, and then develop promotions and track their effectiveness.

By standardizing 2,200 customer-facing professionals on Siebel eFinance, a version of Siebel eBusiness Applications tailored for the financial services industry, Postbank will create a single, comprehensive customer information management system. Sales and service professionals will be able to capture and review all customer interactions across multiple communications channels. With access to the most current customer information, Postbank service professionals will be able to provide personalized, 24x7 support encompassing all bank products and traversing phone, email, Web, and in-person contact -- according to the customer's preference. Sales representatives will be able to review requests and offer products and guidance relevant to customers' overall financial goals. And Postbank marketing teams will be able to create accurate customer profiles, to more precisely target campaigns and evaluate results. By creating a central repository for customer information across multiple channels, Siebel eFinance will help Postbank understand and respond to customers' needs, as well as add meaningful capabilities -- such as Web-based self-service -- that further enhance customer satisfaction.

"Postbank is renowned for banking transaction innovations, and we sought to bring multichannel flexibility to customers' interactions, as well as a better understanding of customers' needs and preferences for new products and services. We were impressed by Siebel Systems' commitment to customer satisfaction, and persuaded by the company's global reputation for 100 percent satisfaction among its own customers," said Gerrit Dekker, Vice President of Telephone Banking and CRM, Postbank. "Siebel Systems' eBusiness applications will make it possible for any and every customer-facing Postbank professional to provide fast, knowledgeable assistance, regardless of how a customer contacts us.

"Our technical and functional evaluation of Siebel eFinance revealed Siebel Systems' deep understanding of the global financial services industry, as well. We found Siebel eFinance to be robust, scalable and designed to integrate easily with a wide range of function-specific applications, making the solution a great fit with our legacy systems," said Dekker.

About Siebel Systems

Siebel Systems, Inc. (Nasdaq:SEBL) is the world's leading provider of eBusiness applications software. Siebel Systems provides an integrated family of eBusiness applications software enabling multichannel sales, marketing and customer service systems to be deployed over the Web, call centers, field, reseller channels, retail and dealer networks. Siebel Systems' sales and service facilities are located in more than 28 countries. For more information, please visit Siebel Systems' Web site at www.Siebel.com.

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 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 for the year ended December 31, 1999 and its other filings with the Securities and Exchange Commission.

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.