Active Software and Art Technology Group Announce eCommerce Integration Solution.

Business Editors/High-Tech Writers

SANTA CLARA, Calif. and CAMBRIDGE, Mass.--(BUSINESS WIRE)-- April 19, 2000

ATG Dynamo Open Adapter for ActiveWorks to Provide Rapid Integration of Enterprise Applications with Online Customer-Facing Web 

Applications

Active Software, Inc. (Nasdaq:ASWX), a leading provider of eBusiness infrastructure software products, and Art Technology Group, Inc. ("ATG") (Nasdaq:ARTG), developers of eCommerce and online personalization applications, today jointly announced the immediate availability of the ATG Dynamo Open Adapter for Active Software's ActiveWorks(TM) Integration System. The new Open Adapter brings together ATG's Dynamo(R) Product Suite and Active Software's ActiveWorks to provide businesses with the ability to unlock and leverage information residing in existing enterprise applications.

The ATG Dynamo Open Adapter for ActiveWorks enables organizations to integrate back-end enterprise applications from companies such as Oracle, PeopleSoft, SAP, and Siebel, into personalized online Web applications. Businesses can unify disparate sources of information into a single customer picture with this new application connectivity, providing a consistent customer experience regardless of point-of-contact or channel of communication. eBusiness integration creates faster and more efficient operations, real-time information flow and greater responsiveness to customers, allowing companies to have closer and more productive relationships with their customers.

"As companies move beyond providing simple storefronts, they need to effectively leverage the customer information they have throughout their entire organization," said Ken Volpe, vice president of product management and marketing, ATG. "Our partnership with Active Software allows businesses to build effective relationships and manage the entire customer lifecycle based on a total, unified view of the customer."

"Our partnership with ATG reinforces our strategy to work with leading eCommerce companies in order to provide an integration platform that automates business processes both inside and outside the company, creating a continuous commerce environment," said Chet Kapoor, vice president, business development, Active Software, Inc. "The Active Software and ATG solution enables businesses to rapidly deliver highly-personalized customer and product information within the enterprise and outside the firewall to partners, significantly improving relationships with online customers."

About Art Technology Group, Inc.

Art Technology Group, Inc. (ATG) is a leading provider of Internet customer relationship management and electronic commerce products and services. ATG offers an integrated suite of Java application server-based products and services, as well as related application development, integration and support services. ATG's Dynamo(R) Product Suite enables Global 1000 enterprises, as well as new businesses using the Internet as their primary business channel, to understand, manage and build their online customer relationships and to more effectively market, sell and support their products and services over the Internet. The Dynamo solution is designed to provide businesses with the core platform and software tools required to develop and deploy personalized, scalable and reliable e-commerce Web sites. Dynamo is licensed to over 100 customers including: 3M, BabyCenter, BellSouth, BMG Direct, Eastman Kodak, Informix, John Hancock Funds, Inc., Network Solutions, Scudder Kemper Investments, Sun Microsystems and TheStreet.com. The Company is headquartered in Cambridge, MA with additional locations throughout the U.S. and in Europe.

About Active Software, Inc.

Founded in 1995, Active Software, Inc, (Nasdaq:ASWX) is a leading provider of eBusiness infrastructure software products. Active Software's eBusiness platform, the ActiveWorks(TM) Integration System, automates end-to-end business processes both within the enterprise and with B2B trading partners and customers across the Internet. Active Software has more than 200 customers in industries such as telecommunications, financial services, government, technology, utilities, distribution, manufacturing and transportation. Active Software is headquartered in Santa Clara, California. For more information, visit the company Web site at www.activesoftware.com.

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 ATG's prospectus and in periodic reports and registration statements filed with the Securities and Exchange Commission. Risk factors related to the subject matter of this press release include the possibility that the Adapter will not be developed or commercially released, that customers will encounter difficulties integrating the two companies' software, either now or in the future; that the strategic alliance between the two companies will be unsuccessful; unrealistic customer expectations; and the costs and risks associated with intellectual property infringement and litigation. ATG undertakes no obligation to update any of the forward-looking statements after the date of this press release.

Except for the historical information contained herein, the matters discussed in this news release are forward-looking statements that involve risks and uncertainties that could cause actual results to differ materially from those in such forward-looking statements. Potential risks and uncertainties include, without limitation, Active Software's limited operating history, potential fluctuations in operating results, the company's substantial dependence on its ActiveWorks software products, the company's need to expand its sales and distribution channels, and the uncertain market acceptance of eBusiness integration software products. These and other risk factors are described in detail in the Company's Form 10-Q for the year ended December 31, 1999, and in its other filings with the Securities and Exchange Commission.

Note to Editors: The Active Software logo, Active Software and ActiveWorks, are trademarks or registered trademarks of Active Software Inc. Dynamo is a registered trademark of Art Technology Group. All other trademarks mentioned herein are the property of their respective owners.