CHICAGO, IL, October 1, 2001—Cognos^® (Nasdaq: COGN; TSE:CSN), the leading global provider of business intelligence solutions, today announced that it has strengthened its partnership with Siebel Systems through the successful validation of the Cognos Business Intelligence Platform version 6.0 integration with Siebel Data Warehouse, version 6.0. This integrated solution helps joint Cognos and Siebel Systems customers reinforce customer acquisition and retention, improve business relationships, increase top-line growth, and deliver measurable ROI from their customer-focused eBusiness strategy.

Siebel Systems, Inc., (Nasdaq: SEBL), is the world's leading provider of eBusiness applications software. The Siebel Validation Program evaluates and documents integrated third-party solutions by putting them through rigorous technical scrutiny. Siebel Systems validated the Cognos Business Intelligence Platform, including Cognos PowerPlay^®, Cognos Impromptu^®, Cognos Visualizer^®, Cognos Query^®, and Cognos KPI Business Pack^®.

Siebel Systems, Inc. enables multichannel sales, marketing, and customer service systems to be deployed over the Web, call centers, field, reseller channels, retail, and dealer networks. The integrated solution helps organizations turn their customer information into meaningful customer intelligence that impacts revenue, profitability, and customer satisfaction.

"The integrated solution gives companies a better understanding of all aspects of their business across customer and ERP data," said Michael Straub, Alliances Technical Director for Siebel Systems. "Companies will be able to leverage this insight, improving their ability to sell to, market to, and service their customers."

"From managed reporting to multidimensional analysis, Cognos' broad analytical capabilities support the needs of users across the enterprise, and can be enhanced as a company's eBusiness strategy becomes more sophisticated," said Pat O'Leary, Cognos Vice President of Strategic Alliances. "With the strengthening of our partnership through this validation, Cognos and Siebel Systems further bridge the gap between business processes to ensure that customers, partners, and suppliers are making consistent, coordinated decisions to grow the business and strengthen relationships."