ATG Executive's Commentary on CNNfn Available On Demand Online; Footage of Senior VP Phil London's ''Black Friday'' Appearance on CNNfn's ''Market Call'' Can Be Seen On ATG.com Web Site.

Business Editors/High-Tech Writers

CAMBRIDGE, Mass.--(BUSINESS WIRE)--Dec. 5, 2003

ATG (Art Technology Group, Inc., Nasdaq: ARTG), a leading provider of innovative software applications for commerce and customer self-service, today announced that an on demand replay of Senior Vice President of Products and Technology Phil London's appearance on the November 26 edition of CNNfn's "Market Call" program is now available for viewing on the ATG.com Web site. To view the segment, go to: http://www.atg.com/en/pages/cnnfn/

London appeared with host Christine Romans as part of CNNfn's coverage of "Black Friday," or the day after Thanksgiving traditionally identified as the official start of the holiday shopping season. London and Romans discussed the growth and trends associated with online shopping, touching on areas such as customer self-service and measures online retailers are taking to avoid anti-spam backlash as they launch holiday email marketing campaigns.

For the last eight years, ATG has been providing advanced personalization and self-service solutions for the retail industry. Retail customers including Best Buy, Cabela's, Finish Line, Franklin Covey, J. Crew, Neiman Marcus, Restoration Hardware and Casual Male, have relied on ATG's software applications for commerce and customer self-service to increase customer satisfaction and retention.

About ATG

ATG (Art Technology Group, Inc.) is a leading provider of innovative software applications for commerce and customer self-service. Customers around the globe rely on ATG for frontline applications that enhance and improve the entire customer lifecycle experience. Deployed on the industry's most popular application servers, ATG's application suites for e-commerce, portals, and relationship management are ideal for integrating online initiatives across the enterprise.

ATG has delivered online solutions to blue-chip companies worldwide including Aetna Services, Alcatel, American Airlines, Barclays Global Investors, Best Buy, BMG Direct, Eastman Kodak, Ford Motor Credit, HSBC, J.Crew, Sun Microsystems, Walgreens, and Wells Fargo. The company is headquartered in Cambridge, Massachusetts, with additional locations throughout North America, Europe, and Asia. For more information about ATG, please visit our Web site at www.atg.com.

(C) 2003. ATG and Art Technology Group are registered trademarks of Art Technology Group, Inc. All other product names, service marks, and trademarks mentioned herein are trademarks of their respective owners.