ATG Gold Sponsor, Featured Speaker at Forrester Finance Forum 2005.

NEW YORK -- Event Includes ATG Financial Services Customers Who Have Leveraged the Online Channel to Create Engaging Experiences that Promote Growth While Fostering Loyalty

ATG (Art Technology Group, Inc., Nasdaq: ARTG), the software provider behind the most consistent and relevant marketing, commerce, and service experiences, today announced its Gold-level sponsorship of The Forrester Finance Forum 2005, June 9-10 in New York City. Further, ATG's Director of Financial Services, Brian Walter, is a featured speaker in the "Guest Executive Forum" on June 10, with a presentation titled "Cross-Sell To Success With Multichannel eMarketing."

At Forrester's Finance Forum 2005, analysts and industry experts will tell firms how to boost their cross-sell success with great customer experiences. The event will show firms how to use technology to deliver the simplicity and transparency that today's consumers want. The event will reveal which banks, brokerages, mutual fund companies, credit unions, insurers, and credit card companies create great experiences across channels. And Forrester will describe the organizational, technological, and marketing strategies that firms need to get more business from today's financial services consumer.

The ATG session will cover how financial services firms need to conduct much more targeted, personally relevant campaigns that present a consistent image across all e-channels and surround the target audience with their message no matter the touchpoint.

Key questions this session will answer:

--How do you present a sustained and consistent brand and message to your audience over time, and through all touchpoints?

--How can you synchronize and integrate Web and email to enhance the overall customer experience?

--How can you use inbound information to add value to outbound communications and "earn the right" to market to an individual?

--How can you target information to the customer or prospect within the context of the customer situation and interaction?

ATG financial services and banking clients include Allstate, Barclays Global Investors, BNL, Citibank NA, Conseco, DAB Bank AG, Daewoo Securities, Deutsche Bank, Dreyfus, DZ Bank, Ford Motor Credit, Franklin Templeton Companies, Friends Provident, HSBC, John Hancock Funds, Mellon Financial, Merrill Lynch, Pierce, Fenner & Smith, MFS Investment Management, Nomura Int Plc, Oppenheimer Funds, Pioneer Investments,Wells Fargo, Zurich Financial Services, and many others.

What:"Cross-Sell To Success With Multichannel eMarketing."

When: Friday, June 10, 2005, 10:30 a.m. - 11:00 a.m.

Where: Sheraton New York Hotel and Towers, 811 7th Avenue

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 throughout the lifecycle of marketing, commerce, and customer service, and across the Web, e-mail and call centers. ATG has delivered category-leading e-business solutions to many of the world's best known brands including A&E Networks, Airbus, American Airlines, American Eagle Outfitters, AT&T Wireless, Best Buy, Boeing, France Telecom, Friends Provident, GE, Hewlett-Packard, HSBC, InterContinental Hotels Group, Kingfisher, Merrill Lynch, Neiman Marcus, Philips, Procter & Gamble, SBC, T-Mobile, Target, US Army, US Federal Aviation Administration, Wells Fargo, Warner Music, 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.