Reader's Digest Selects ATG to Power Online Diet Program; ChangeOne.com Harnesses ATG Commerce to Build Subscriber Base and Guide Participants Through Personalized Diet Program.

Business Editors/High-Tech Writers

CAMBRIDGE, Mass.--(BUSINESS WIRE)--Jan. 20, 2003

ATG (Art Technology Group, Inc., Nasdaq: ARTG), a leading developer of online marketing, sales, and service solutions for global consumer-facing organizations, today announced that Reader's Digest selected ATG Commerce to power ChangeOne.com, the site of the new official Reader's Digest diet. Reader's Digest selected ATG for ChangeOne.com based on the proven success of its ability to enhance scalability, execute on several targeted marketing campaigns and create strong online relationships with customers through rich personalization features as demonstrated with www.rd.com.

Officially launched in January 2003, ChangeOne.com is an online diet program that leverages ATG Commerce and Scenario Personalization(SM) technology to deliver members highly-personalized diet programs and recipes, based on their specific weight loss goals and food preferences. Additionally, members can connect to share success stories with one another at ChangeOne.com's online forum, while tracking their dieting success each week. The stories and feedback shared online will help capture successes and challenges of the diet and help members establish best practices.

"ATG is allowing ChangeOne.com to take online diet management to a new level," said Rich Williams, manager of the Internet systems group at Reader's Digest. "Because personalization plays such a major role in the way this diet is conceived and administered, our customers receive the same individual attention and programs online as they would in a more traditional diet program environment."

John Hastings, Reader's Digest health editor and Mindy Hermann, a registered dietician and former American Dietetic Association spokesperson, co-authored "ChangeOne: The Breakthrough 12-Week Eating Plan: Lose Weight Simply, Safely and Forever," released on December 28th, 2002 to 10,000 stores throughout the United States, to coincide and promote ChangeOne.com.

"Reader's Digest has established strong brand loyalty in both the online and offline world," said John Dragoon, senior vice president of marketing and product management, ATG. "By selecting ATG Commerce, Reader's Digest will continue to build online relationships with existing customers and market to new audiences to create awareness for the ChangeOne.com program. Also, as the ChangeOne.com program gains popularity, ATG will allow Reader's Digest to easily scale the site to accommodate more traffic and users."

About Reader's Digest

The Reader's Digest Association, Inc. (NYSE: RDA) is a leading global publisher and direct marketer. Revenues were $2.4 billion for the fiscal year ended June 30, 2002. Products include Reader's Digest, the world's most widely read magazine, published in 19 languages, 48 editions and sold in more than 60 countries. The company sells 20 million books a year through Books Are Fun, its display-marketing unit, and publishes children's books, reference books, "How to" books, as well as titles on travel, religion, health and home, and other publications, music CDs and videos in many countries. Global headquarters are located at Pleasantville, New York. For information, visit www.rd.com.

About ATG

ATG (Art Technology Group, Inc.) is a leading developer of online marketing, sales, and service solutions for global consumer-facing organizations. 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.

Today, ATG has delivered solutions to blue-chip companies worldwide, including Aetna Services, Inc., Alcatel, American Airlines, Barclays Global Investors, Best Buy, BMG Direct, Eastman Kodak, Ford Motor Credit, HSBC, J. Crew, Sun Microsystems, Walgreens, and WellsFargo and government organizations including the United States Army and the USDA. 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) 2002 ATG, Art Technology Group, and Scenario Personalization are registered trademarks of Art Technology Group, Inc. All other product names, service marks, and trademarks mentioned herein are trademarks of their respective owners.

This press release contains forward-looking statements for purposes of the safe harbor provisions under The Private Securities Litigation Reform Act of 1995. These statements involve known and unknown risks and uncertainties that may cause ATG's actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by such forward-looking statements. Important risk factors affecting ATG's business generally may be found in their periodic reports and registration statements filed with the Securities and Exchange Commission at www.sec.gov. Risk factors related to the subject matter of this press release include the possibility that the ATG product deployment will not be successful, on time or significantly enhance the user's Internet experience or handle user volumes; the need to adapt to rapid changes so products do not become obsolete; the possibility of errors in ATG's software products; the possibility that the solution will not make customer implementations faster or more flexible; and the risks and costs of intellectual property litigation. ATG undertakes no obligation to update any of the forward-looking statements after the date of this press release.