ATG Enhances ATG Commerce with Integrated Natural Language Catalog Search, Allows End Users to Quickly and Intuitively Get to Products and Services That Best Meet Their Needs

Business Wire, June 28, 2005

CAMBRIDGE, Mass. -- ATG (Art Technology Group, NASDAQ: ARTG), the software provider behind the most consistent and relevant marketing, commerce, and customer service experiences, today announced that it has enhanced ATG Commerce, the market-leading commerce and marketing engine, with integrated catalog search. ATG is now leveraging the power of its award-winning natural language search technology acquired from Primus to enable integrated, natural language catalog search to allow end users to more quickly and intuitively get to the products and services that best meet their needs.

With this new capability, which will be available as a part of ATG Commerce 7.1 and requires the purchase of the ATG Search engine, any changes companies make in their ATG Commerce catalog will now automatically update their ATG Search function - with no manual catalog/search integration required. Updates to commerce search can now be made in near real-time (rather than in a batch process), shortening the create-to-publish cycle and allowing more dynamic merchandising initiatives. Ultimately, the integrated catalog/search capability empowers companies that use ATG Commerce to create more relevant, compelling experiences for their customers, leading them to the shopping cart faster.

In a separate release, ATG today announced that leading lifestyle retailer American Eagle Outfitters, Inc. (AE) has selected ATG Search technology from ATG. With this new ability to easily integrate natural language search into their catalog, American Eagle Outfitters can optimize the online sales experience and deliver desired information faster, which can translate to higher conversion rates and increased online revenues.

"End users are now accustomed to finding usable information quickly on the Web, and they now expect search as an aspect of their ability to navigate informational and transactional architectures, no matter how large or small the business," said Cliff Conneighton, senior vice president of marketing, ATG. "More and more, users will demand and expect search applications that allow them to access information even more swiftly in a natural language format as they look to expedite their product and information searches. With integrated catalog search now a part of ATG Commerce, ATG is providing leading natural language search technology so our customer can get out ahead of the curve."

About ATG

ATG (Art Technology Group, Inc., NASDAQ: ARTG) makes the software that the world's largest and most prestigious companies use to create a relevant and consistent customer experience, across the Web, e-mail, call center, and mobile channels; and throughout the marketing, commerce, and service lifecycle. With ATG, world-class enterprises create and manage highly targeted online commerce and marketing campaigns, as well as loyalty-driving and cost effective knowledge management, customer service, and support initiatives. ATG's solutions power brands including A&E Networks, Airbus, American Airlines, American Eagle Outfitters, AT&T Wireless, Best Buy, Boeing, France Telecom, Friends Provident, General Electric, Hewlett-Packard, HSBC, InterContinental Hotels Group, Kingfisher, Merrill Lynch, Neiman Marcus, Philips, Procter & Gamble, SBC, T-Mobile, Target, US Army, US Federal Aviation Administration, Warner Music, Wells Fargo, and Yahoo! The company is headquartered in Cambridge, Massachusetts, with additional locations throughout North America, Europe, and Asia. For more information about ATG, please visit www.atg.com.

(C) 2005 Art Technology Group, Inc. 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.

This press release contains forward-looking statements for purposes of the safe harbor provisions under The Private Securities Litigation Reform Act of 1995. Any forward-looking statements contained in this release are based on current expectations, are not guarantees of future performance and are subject to a number of 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. Risk factors related to the subject matter of this press release include the following: the possibility that ATG's product strategy may change; the need to adapt to rapid changes so ATG products do not become obsolete; the possibility of errors in ATG's products; risk that ATG products will not deliver significant and definable business benefits to end users; difficulties encountered in the integration, deployment, or implementation of the ATG products and customers systems; failure in the customer's widespread adoption and use of the ATG products; risk resulting from new product introductions and customer acceptance of new ATG products; fluctuations in customer demand; use of the Internet as a vehicle for ATG products; risks associated with competition and the rapid consolidation of competitors; the ability of ATG to manage its growth and integration efforts and the ability of ATG to compete successfully in the future; non-responsiveness of the market to receipt of awards; the company may not qualify it to be included in future awards or may not receive future awards; costs and risks associated with intellectual property infringement and litigation, as well as other 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, including but not limited to those appearing under the caption "RISK FACTORS THAT MAY AFFECT RESULTS". ATG undertakes no obligation to update any of the forward-looking statements after the date of this press release.