OTTAWA, ON, November 9, 2004— Cognos (NASDAQ: COGN; TSX: CSN), the world leader in business intelligence (BI) and corporate performance management, today announced that it has been chosen as the top independent software vendor (ISV) by Canada's premier reseller publication, Computer Dealer News for the second straight year. Cognos has been selected for this prestigious honor for its year-over-year revenue growth, commitment to customer success, partner success, and industry excellence in the Canadian marketplace.

"It's a tremendous achievement for Cognos to once again receive the top ISV award. It's a clear indication that the company continues to deliver enterprise value and demonstrable return on investment to its customers and partners," said Paolo Del Nibletto, editor, Computer Dealer News. "This ranking clearly shows that Cognos is strengthening its leadership position in the corporate performance management market in the minds of business and IT executives."

"It's an honor to be selected by Computer Dealer News for our continued contributions to the Canadian software industry," said Dave Laverty, senior vice president of global marketing, Cognos. "Our customers in Canada - and around the world - rely on our innovative solutions to deliver the performance needed to create new business opportunities. Whether they choose to standardize on our software, or leverage it as a point solution to address key operational requirements, our customers use us to better monitor, understand, and drive the successful performance of their business."

Cognos has recently secured a number of top honors for innovation and leadership, which include winning the 2004 DM Review Readership Awards for best business intelligence solution. For more information on Cognos' awards, please visit http://www.cognos.com/news/awards/index.html.

ABOUT COMPUTER DEALER NEWS
Computer Dealer News (CDN) established in May 1985 as Canada's premier reseller publication, can be defined as the most important source of information for the reseller channel. Published 18 times a year, CDN is designed to provide resellers with timely, comprehensive coverage of news, events and issues that affect their businesses. CDN's circulation provides unrivaled coverage of the reseller channel including value added resellers, systems integrators, consultants, dealers, software developers, distributors and manufacturers. CDN has devoted more resources than any other publication in Canada covering the news and events shaping the reseller channel.

ABOUT COGNOS
Cognos, the world leader in business intelligence and corporate performance management, delivers software that helps companies drive, monitor and understand corporate performance.

Cognos delivers the next level of competitive advantage - Corporate Performance Management (CPM) - achieved through the strategic application of BI on an enterprise scale. Our integrated CPM solution helps customers drive performance through planning; monitor performance through scorecarding; and understand performance through business intelligence.

Cognos serves more than 23,000 customers in over 135 countries. Cognos enterprise business intelligence solutions and services are also available from more than 3,000 worldwide partners and resellers. For more information, visit the Cognos Web site at http://www.cognos.com.