Art Technology Group Names Internet Marketing Veteran Ian Reid as Vice President of Marketing.

Business/Technology Editors

CAMBRIDGE, Mass.--(BUSINESS WIRE)--April 25, 2000

Art Technology Group, Inc. ("ATG") (Nasdaq: ARTG), developers of e-commerce and online personalization applications, today announced the appointment of Mr. Ian Reid as vice president of marketing. The recruitment of Mr. Reid is a cornerstone in establishing ATG's market position as a leading platform provider for personalization, e-commerce, and customer management solutions. ATG's growing marketing infrastructure is driving the corporation's ability to scale aggressively to support customers, partners, and sales professionals.

Capitalizing on his more than 20 years of strategic marketing and technology management experience, Mr. Reid will be responsible for aggressively shifting ATG to a marketing-driven organization, anticipating marketing efforts to yield a major impact in 2000. Within the capacity of vice president of marketing, Mr. Reid is specifically charged with leading all aspects of external communications and driving a consistent marketing strategy and position worldwide. His initial priorities include dramatically expanding the channel and field marketing organizations. The systems integration channel has helped fuel the extraordinary growth of ATG over the past eighteen months.

Mr. Reid has been an independent Internet marketing consultant since October 1998, working with a number of dot-coms and infrastructure vendors, including several CMGI companies as well as BlueStreak.com, a media online marketing services company. Prior to consulting, Mr. Reid was vice president of field and channel marketing for Open Market, Inc., the Internet commerce software pioneer, where he was successful in building a global field and channel marketing team serving direct sales, resellers and professional services partner channels worldwide. During his three years with Open Market he was a frequent spokesperson for the press, industry analysts and the investment community.

"ATG has always been widely known within the technology community for its superior e-commerce and personalization technology. The time has come for us to get serious about owning mind-share as well," said Paul Shorthose, president and COO, ATG. "In recent months, we have begun investing heavily in our marketing team. Now with Ian at the marketing helm, ATG will have the leadership to orchestrate its resources toward the common goals of gaining mind-share and increasing sales."

Prior to his tenure at Open Market, Inc., Mr. Reid was vice president of marketing at Advanced Visual Systems, a company providing visualization solutions for industrial, research and commercial markets. Previously he was vice president of marketing at Wavefront Technologies, offering 3D animation solutions to the industrial, entertainment and media markets, and also an executive at Stardent Computer, a manufacturer of graphics supercomputers and AVS visualization software.

About Art Technology Group

Art Technology Group, Inc. ("ATG") (Nasdaq: ARTG) is a leading provider of Internet customer relationship management and electronic commerce products and services. ATG offers an integrated suite of Java application server-based products and services, as well as related application development, integration and support services. ATG's Dynamo(R) product suite 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 software tools required to develop and deploy personalized, scalable and reliable e-commerce Web sites. Dynamo is licensed to over 200 customers including: 3M, BabyCenter, BMG Direct, Eastman-Kodak, Informix, J.Crew, John Hancock Funds, Inc., Network Solutions, Scudder Kemper Investments, Sun Microsystems and TheStreet.com. The Company is headquartered in Cambridge, MA with additional locations throughout the U.S. and in Europe.

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 prospectus and in periodic reports and registration statements filed wit h the Securities and Exchange Commission. Risk factors related to the subject matter of this press release include the possibility that Mr. Reid will not remain in his position; that the expansion of the marketing department will not result in ATG's increased growth; and that that the channel marketing initiative will not be successful. ATG undertakes no obligation to update any of the forward-looking statements after the date of this press release.