ATG and Accretive Commerce Form Strategic Alliance to Deliver Fully Integrated Commerce Solution

Accretive Commerce to Serve as Value Added Integrator of ATG Commerce OnDemand

CAMBRIDGE, Mass. & CHARLOTTE, N.C.--(BUSINESS WIRE)--Aug. 7, 2006--ATG (Art Technology Group, Inc., NASDAQ: ARTG), whose licensed and on demand technology powers e-commerce sites and supporting e-marketing and e-service solutions for the world's most consumer-centric enterprises, and Accretive Commerce, Inc., the market leading business process outsourcing firm specializing in direct-to-customer commerce, today announced a strategic alliance that will provide online sellers with a powerful new direct-to-customer solution. Under terms of the agreement, the two companies will fully integrate ATG's best-in-class eCommerce applications with Accretive Commerce's market-leading customer care, fulfillment, and logistics solutions, resulting in a new and unique end to end e-commerce option. The solution is available immediately and being actively marketed by both firms.

The ATG and Accretive Commerce alliance has been formed to address the challenges consumer-facing organizations currently encounter in developing an effective direct-to-customer channel for their online businesses. Until now, options have been limited to either purchasing disparate e-commerce, customer care, and fulfillment technology and services, resulting in a cost-and resource-intensive vendor search, as well as potential integration issues; or outsourcing their entire e-commerce business, settling for inferior technology, and relinquishing branding and merchandising control. The ATG and Accretive Commerce alliance presents an alternative that overcomes these obstacles by offering a fully integrated, cost effective solution, including best-of-breed software delivered as a service, plus best-of-breed customer care, fulfillment, and logistics services.

"Many online merchants, including some of the very largest, are looking for a complete solution for the unique technology and operational challenges of the e-commerce channel," said Cliff Conneighton, senior vice president, ATG. "The search for a comprehensive solution can delay their online presence, or worse, can cause them to settle for less-than-best e-commerce functionality. Now companies can get a best-in-class solution across the entire demand chain which is fully integrated and customized to meet their exact requirements, with unprecedented speed to market."

Several synergies between ATG and Accretive Commerce led to the strategic alliance, including both companies' common history of working with some of the more recognizable brands in retail and apparel. For instance, the specialty fashion retailer New York & Company recently selected ATG Commerce OnDemand to power its online storefronts and Accretive Commerce for its fulfillment, customer care, and backend integration services. Additionally, the companies have already completed a number of successful integrations in which major retail brands, including Restoration Hardware and American Eagle Outfitters, have used ATG Commerce to power their sites and at the same time have turned to Accretive Commerce for fulfillment and customer care to enjoy significant improvements in their cost structures, revenue growth, and customer satisfaction.

"This alliance will produce a very unique offering to the industry; one that addresses a long-standing challenge for on-line sellers," said Matt Carroll, senior vice president, eCommerce Services, Accretive Commerce. "Rather then relying on expensive, proprietary technology from multiple vendors, or integrated solutions that offer 'cookie cutter' services and functions, companies seeking a comprehensive, fully outsourced eChannel will now be able to turn to just one source, Accretive Commerce, and receive the industry's most highly-regarded eCommerce, customer care, and fulfillment solutions. Organizations adopting our end to end solution, powered by ATG, will now have the ability to offer an unmatched, seamless customer experience."

About ATG

ATG (Art Technology Group, Inc., NASDAQ: ARTG) makes the software that the world's most customer-conscious companies use to create a more relevant and consistent customer experience, throughout the marketing, commerce, and service lifecycle, and across the Web, e-mail, call center, and mobile channels. Offering an alternative to the traditional silo-based approach to customer-facing applications, ATG Wisdom(TM) is the company's strategy for delivering a seamless, more compelling, and mutually valuable experience to each customer and segment. The company fulfills this strategy by providing fully integrated best-of-breed product suites installed on-premise or delivered on-demand. ATG's solutions power over 600 major brands, including A&E Networks, Airbus, American Airlines, American Eagle Outfitters, Best Buy, Boeing, Cingular Wireless, DirecTV, France Telecom, Friends Provident, Hewlett-Packard, Hotels.com, Hyatt Hotels, HSBC, InterContinental Hotels Group, Kingfisher, Louis Vuitton, Merrill Lynch, Neiman Marcus, Philips, Procter & Gamble, Symantec, T-Mobile, Target, US Army, US Navy, Warner Music, and Wells Fargo. The company is headquartered in Cambridge, Massachusetts, with additional locations throughout North America and Europe. For more information about ATG, please visit www.atg.com.

About Accretive Commerce

Accretive Commerce is a market-leading direct commerce channel provider, accelerating companies' growth through a fully integrated range of outsourced eCommerce, Customer Care, and Fulfillment & Logistics solutions and services. Accretive Commerce has a proven track record serving some of the world's best known brands such as American Eagle Outfitters, Godiva, Restoration Hardware and many others. The company combines unparalleled capability, scalability, and flexibility with lean six sigma process excellence to deliver its clients a better brand experience, greater revenues, and lower costs. Accretive Commerce has an unparalleled commitment to customer service and a focus on brand protection that translates into guaranteed results and value creation. For more information, visit www.accretivecommerce.com

(c) 2006 Art Technology Group, Inc. ATG and Art Technology Group are registered trademarks and ATG Wisdom is a trademark 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 its 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 will not increase customer revenue across brands; that those customers leveraging ATG won't have the opportunity to increase revenue and decrease future costs; 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 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.

Tucker Walsh
ATG
+1.617.386.1159
twalsh@atg.com