Art Technology Group Adds Robert Walters and Phyllis Swersky to Board of Directors.

Business/Technology Editors

CAMBRIDGE, Mass.--(BUSINESS WIRE)--September 18, 2000

President of Meltech Group and Senior VP and CIO of John Hancock

Financial Services to Join ATG's Board

Art Technology Group, Inc. ("ATG") (Nasdaq: ARTG), developers of e-commerce and online personalization applications, today announced the appointment of Robert Walters, senior vice-president and CIO of John Hancock Financial Services, and Phyllis Swersky, president of the Meltech Group to its Board of Directors, effective May 19th. Both Walters and Swersky bring over 20 years of business and technology wisdom and experience to ATG's board.

"We are extremely pleased to gain both Phyllis' and Bob's proven vision and skills in the industry," said Joe Chung, Chairman of the Board. "Their expertise in enterprise software, corporate finance, and global professional services make them invaluable members of the ATG corporate governance team."

Mr. Walters is responsible for technology management activities for John Hancock and its subsidiaries. In this capacity, he oversees a budget of over $200 million and 1,300 technology professionals. He is credited with linking Hancock's business strategy with IT direction and application development as well as managing all IT services such as computing, networking and e-commerce capabilities. Prior to Hancock, Walters held positions with Citibank, Bankers Trust and Marine Midland Bank. He is also a board member for the Essex Corporation.

Ms. Swersky is a current board member of Investors Financial Services Corp., Circles (Life Concierge.com) Inc., Berkshire Life Insurance Company and the Northeastern University Board of Overseers, as well as a former board member of Massachusetts Technology Development Corporation for nine years. Ms. Swersky is president of the Meltech Group, which provides business advisory services to CEOs and executive management teams of growing companies. She has over 20 years of hands-on management and financial experience, including experience as president of several computer software and services companies. Swersky specializes in developing and integrating the strategy, infrastructure and culture necessary to drive organizations to profitable growth. She has been featured in Fortune magazine and has spoken at many conferences regarding women in business.

About Art Technology Group

Art Technology Group, Inc. is a leading provider of online customer relationship management and electronic commerce products and services. ATG offers an integrated suite of Java(TM) application server-based products and services, as well as related application development, integration and support services. The ATG Dynamo(R) e-Business Platform enables Global 1000 enterprises, as well as new businesses using the Internet as their primary business channel, to understand, manage and build their online customer relationships and to more effectively market, sell and support their products and services over the Internet.

The Dynamo solution is designed to provide businesses with the core platform and applications required to develop and deploy personalized, scalable and reliable e-commerce Web sites. Dynamo is licensed to over 400 customers including 3M, BabyCenter, BMG Direct, Eastman Kodak, Informix, J. Crew, Network Solutions, Sun Microsystems, Target Corporation and TheStreet.com. The company is headquartered in Cambridge, Mass., with additional locations throughout North America, Europe and Asia Pacific.

Dynamo is a registered trademark of Art Technology Group.

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 ATG's periodic reports and registration statements filed with the Securities and Exchange Commission. Risk factors related to the subject matter of this press release include the possibility that the individuals named in this press release will not serve out their terms; that the Council will be disbanded; that none of the Council's suggestions will result in changes to ATG's products or direction; and that the experience of these individuals will not prove helpful to ATG or to other members of the Council. ATG undertakes no obligation to update any of the forward-looking statements after the date of this press release.