ATG Travel and Hospitality Customers Have the Best Performing Web Sites According to New Performance Index.

Business Editors

CAMBRIDGE, Mass.--(BUSINESS WIRE)--April 13, 2004

Intercontinental.com, Hotels.com Identified as Speediest Hotel

and Travel Agency Sites in Inaugural Rankings from Keynote Systems 

ATG (Art Technology Group, NASDAQ: ARTG) the software provider behind the Web's richest customer experiences, today announced that several of its key customers in the travel and hospitality market dominated the rankings in the inaugural "Keynote Travel & Hospitality Web Transaction Performance Index." This new vertical index from Internet performance measurement company Keynote Systems rates the speed and reliability of leading travel and hospitality Web sites.

ATG solutions are apparent in every category. ATG powers five of the top seven fastest hotel sites, led by top-ranked Intercontinental.com, the Web site of Intercontinental Hotels Group, which owns the popular chains Crowne Plaza, Holiday Inn, Intercontinental Hotels and Resorts and Candlewood Suites. In the travel agency category, ATG customer Hotels.com took the top spot for speed, while ATG customer American Airlines' AA.com clocked in as the third fastest airline site.

The Keynote Travel & Hospitality Web Transaction Performance Index is a comprehensive index that includes more than 25 leading Web sites in three distinct categories - airline, hotel and online travel agency sites. It is the first of its kind to measure speed and reliability for performing common transaction tasks such as checking mileage on an airline site, checking availability and price on a hotel room or looking for a vacation package on an online travel agency site.

"The travel and hospitality industry continues to strive to realize the full potential of online commerce and service. These rankings are indicative of how far ahead of the curve ATG customers are from both a technology and business strategy standpoint," said Cliff Conneighton, senior vice president of marketing, ATG. "Paper tickets and travel brochures are becoming obsolete; companies that utilize ATG solutions will continue to set new standards for innovation both in and out of their industries."

According to data released by consumer behavior consultancy comScore, online travel was the highest-grossing retail category on the Web in 2003, raking in $40.7 billion in purchases. In addition, additional studies from the Travel Industry Association and eMarketer's Travel Industry Worldwide Report showed that of the 64 million U.S. adults that went online for travel information in 2003, nearly 66 percent (42.2 million) made travel purchases online.

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 and guided experience for their customers and partners online and via other channels. Deployed on the industry's most popular application servers, organizations around the globe rely on ATG's frontline applications to integrate e-business initiatives across enterprises.

ATG has delivered e-business solutions to blue-chip companies and organizations worldwide 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, Walgreen Company, Wells Fargo and the U.S. Army. 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) 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 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 business generally may be found in 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, but are not limited to, the following: the Index discussed herein and its results are solely the basis of an inaugural ranking; results of enterprises discussed by the Index or Keynote Systems may not be comparable within the travel and hospitality industries or across other industries; increased speed of change or adoption of technology may alter the comparability of the business results and the technology curve experienced by the enterprises discussed in the Index; and the ideas, materials and metrics presented by the Index may not result in lasting profitable results for any particular customer or significantly improve end customer experiences. ATG makes no representations or warranties, express or implied, regarding any statement, omission or implication presented by the Index or Keynote Systems and all views expressed therein or thereby are its own. ATG undertakes no obligation to update any of the forward-looking statements after the date of this press release.