New Look Chooses ATG to Strengthen Online Growth

LONDON - April 21, 2009 - ATG (Art Technology Group, Inc., NASDAQ: ARTG), the premier provider of e-commerce solutions, today announces that it has been chosen by UK fast fashion retailer New Look to deliver its next generation multi-channel e-commerce platform.

New Look operates more than 900 stores across UK, France & Belgium and in December 2007 launched its first transactional website, www.newlook.co.uk. Weekly sales through the site now match those in the company's top stores, and significant increases in sales mean that enhancing the website with the latest e-commerce technology has become a key priority. Following the success of this initial venture, validating the business model, New Look recognised the need to deliver a true multi-channel user experience and after evaluating the possible options has decided to partner with ATG to deliver their next generation e-commerce platform.

To strengthen its online offering, New Look chose ATG's e-commerce platform to ensure that visitors to the site receive a truly personalised, streamlined service and can browse and purchase clothing and accessories as easily as they can on the high street. The ATG Commerce solution will be implemented in partnership with Accenture as part of New Look's ongoing commitment to investment in its business.

Adrian Thompson, Group Business Change Director at New Look said of the deal, "Having successfully grown our e-commerce business to a 2.79% market share (Source: Hitwise, Apparel & Accessories, Visits to UK web-sites, week ending 11th April), we have recognised our customers' appetite to enjoy a true multi channel experience, and feel that the ATG platform will enable us to successfully deliver the e-commerce element of that customer centric strategy."

Frank Lord, vice president at ATG EMEA explains, "Consumers now expect a seamless shopping experience from retailers, both on and offline. New Look targets young, internet-savvy customers so being able to offer an exceptional multi-channel offering is crucial to remain competitive and maximise sales in the economic downturn. New Look is one of the fastest growing retailers in this market and we are delighted to be working with them to support their growth online."

About ATG

A trusted, global specialist in e-commerce, ATG (Art Technology Group, Inc., NASDAQ: ARTG) has spent the last decade focused on helping the world's premier brands maximise the success of their online businesses. The ATG Commerce application suite is the top-rated platform by industry analysts for powering highly personalised, efficient and effective e-commerce sites. The company's platform-neutral e-commerce optimisation services can be easily added to any web site to increase conversions and reduce abandonment. These services include ATG Recommendations and eStara Connections. The company is headquartered in Cambridge, Massachusetts, with additional locations throughout North America and Europe. For more information, please visit http://www.atg.com.

2009 Art Technology Group, Inc. ATG and Art Technology Group are registered trademarks. 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 will not 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