Active Software and Art Technology Group Partner to Integrate ICRM Solutions with Enterprise Applications.

SANTA CLARA, Calif.--(BUSINESS WIRE)--Sept. 15, 1999--

Integration of E-Commerce and Enterprise Applications Improve

Companies' Relationships with Online Customers

Active Software, Inc. (Nasdaq:ASWX), a leading provider of eBusiness integration software products, and Art Technology Group, Inc. ("ATG") (Nasdaq:ARTG), developers of e-commerce and online personalization applications, today announced the formation of a strategic alliance to enable businesses to deliver Internet Customer Relationship Management (ICRM) solutions integrated with leading enterprise applications, including Oracle(R), PeopleSoft(R) and SAP.

Through this alliance, businesses can unlock information residing in existing enterprise applications and leverage it to build long-lasting and profitable relationships with their online customers. Businesses will now be able to deliver highly personalized and timely information, respond faster to customer inquiries and, most importantly, present a single face to their customers.

"Building long-term relationships with online customers requires real-time interaction among multiple business units and their support systems," said Ken Volpe, director of product management at ATG. "ATG and Active Software have partnered to allow companies to leverage customer information across the entire enterprise, delivering the right content, to the right user, at the right time."

"Active Software's partnership with ATG reinforces our strategy to have ActiveWorks become the integration platform of choice for eBusiness," said Chet Kapoor, vice president, business development, Active Software. "By working together, Active Software will expand its reach into additional markets while ATG will focus on its core competency -- the development of superior e-commerce and personalization applications for managing customer relationships online. Ultimately, our combined customers will benefit by having access to one of the best e-commerce and packaged integration solutions in the industry."

The Active Software/ATG Solution

ATG offers the Dynamo(R) suite of e-commerce and personalization software products for enabling large-scale e-commerce solutions that extend customer relationships across the enterprise. By its very nature, e-commerce requires collaboration among a wide variety of applications. In order to provide this collaboration, ATG will develop, market and resell a Dynamo Adapter for Active Software's ActiveWorks(TM) Integration System. The Dynamo Adapter for Active Works allows businesses to draw customer information from multiple data sources enabling a seamless flow of information throughout the extended enterprise.

Active Software's ActiveWorks Integration System

The ActiveWorks Integration System allows customers to seamlessly integrate the packaged, custom, Internet, database and legacy applications that implement their mission-critical business processes across and beyond their enterprise. ActiveWorks supports specific eBusiness integration solutions for major markets, such as ERP, customer service and e-commerce, in addition to providing a solution to the general integration challenge.

Dynamo Product Suite

The Dynamo Product Suite is a family of tightly integrated Java-based products that meets the high performance and scalability requirements of large e-commerce initiatives. Applying personalization to each and every user experience, Dynamo is the first solution designed specifically to manage online relationships. Consisting of two components -- Personalization Server and Commerce Applications -- the Dynamo Product Suite provides integrated e-commerce capabilities for site development, personalization, selling, and advertising management.

Active Software

Founded in 1995, Active Software is a leading provider of eBusiness integration software products that enable the integration of enterprise software applications within and across the extended enterprise. Active Software has more than 120 customers in industries such as telecommunications, financial services, government, technology, utilities, distribution, manufacturing and transportation. Active Software's headquarters are in Santa Clara. For more information, visit the company Web site at www.activesw.com.

Art Technology Group

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 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, Newbridge Networks, Scudder Kemper Investments, Sun Microsystems and TheStreet.com. The company is headquartered in Cambridge, Mass. with additional locations throughout the U.S. and in Europe.

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 in implementing ATG's adapter; that the strategic alliance 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, uncertainties regarding the impact of the Year 2000 issue, 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 prospectus dated Aug. 12, 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.