Press Releases

CAMBRIDGE, Mass. and SAN MATEO, Calif. – June 21, 2004 – ATG (Art Technology Group, Inc., NASDAQ: ARTG), the software provider behind the Web’s richest customer experiences, and Coremetrics, the leading provider of hosted Web analytics solutions, today announced that the two companies have formed a technology and sales alliance. The alliance will combine unique auto-tagging capabilities from ATG with Coremetrics’ industry leading Web analytics platform to create a new standard for efficiency in the collection and analysis of data from online sites.

Currently, Web site developers and business users wishing to track different information elements on a Web page need to manually “tag” the templates that will be tracked. By replacing the manual tagging process, the ATG-Coremetrics auto-tagging solution reduces initial development and ongoing maintenance time by at least 75 percent. The joint solution delivers seamless access to best-in-class analytics, a reduction in IT costs, and productivity gains to the business user.

“The less time our customers spend on activities to obtain data, the more time they have to analyze and refine their online channels to drive more revenue,” said Cliff Conneighton, senior vice president of marketing, ATG. “By adding ATG’s unique auto-tagging capabilities to Coremetrics Web analysis and reporting tools, we have not only produced a more efficient and cost-effective analytics platform, but also placed even greater power and flexibility in the hands of the business user.”

The new offering will be available to existing joint customers of ATG and Coremetrics, as well as new customers deploying ATG’s Customer Experience Platform and the suite of offerings that make up Coremetrics’ hosted analytics platform.

“The Coremetrics LIVE Profile platform is the most valuable data repository available to online marketers today,” said John Squire, vice president of business development at Coremetrics. “This alliance with ATG makes it even easier for customers to populate those LIVE Profiles with detailed information about their online customers’ interactions. By delivering this auto-tagging solution we are enabling customers to focus on the activities that make them money – optimizing site design, delivering more effective marketing, and making data-driven product decisions. This partnership brings together best-in-class commerce platform and Web analytics into a combined solution.”

About ATG
ATG (Art Technology Group, Inc., NASDAQ: ARTG) delivers innovative software to help high-end consumer-facing companies create a richer, more adaptive interactive experience for their customers and partners online and via other channels. ATG has delivered category-leading e-business solutions to many of the world's best-known brands including A&E Television, Aetna Services, Inc., Alcatel, American Airlines, Barclays Global Investors, Best Buy, BMG Direct, Eastman Kodak, Ford Motor Credit, HSBC, Hyatt, J.Crew, Merrill Lynch, Newell Rubbermaid, Target, U.S. Army, Walgreen Company 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 www.atg.com.

About Coremetrics
Coremetrics is the leading provider of Web analytics solutions. The company’s flagship product, Coremetrics Online Analytics 2004, is the industry's only Web analytics platform that captures and stores all customer and visitor clickstream activity to build LIVE (Lifetime Individual Visitor Experience) Profiles that serve as the foundation for all successful e-business initiatives. With Coremetrics Online Analytics 2004, online marketers, IT managers, and e-commerce executives are able toattract and convert high value visitors, increase customer lifetime value, and create a multi-channel view of customer behavior. Coremetrics services over 230 unique brands online, including Bank of America, Columbia House, CompUSA, Eddie Bauer, Motorola, The Weather Channel, Victoria's Secret, and Williams-Sonoma. Coremetrics is privately held with funding from Accel Partners and Highland Capital Partners, and is headquartered in San Mateo, California with offices in Austin, Texas and Portland, Oregon. To learn more about Coremetrics, visit www.coremetrics.com or call 877-721-CORE.

Coremetrics has strongly supported online privacy since its inception. To learn more, visit www.coremetrics.com/privacy.

©2004 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. 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; that those customers leveraging ATG won’t have the opportunity to increase revenue and reduce costs;; that those customers leveraging ATG won’t have the opportunity to reduces initial development and ongoing maintenance time; 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 or permit the customer to meet its customer-facing or infrastructure requirements; that the ATG product will not continue to be integrated with third party applications or application servers or will not support all Web services enabled systems; that ATG’s product strategy may change in the future; 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.