Over 20 Customers Turn to TeamSite and Dynamo for Streamlined Web Development, Delivery and Transformation

SUNNYVALE, Calif., November 17th, 1999 - Interwoven (Nasdaq: IWOV), a leading provider of content management for the enterprise Web, and Art Technology Group ("ATG") (Nasdaq: ARTG), developer of e-commerce and online personalization applications today announced a significant expansion of their successful partnership based on a series of joint sales, marketing, and development initiatives. Together the companies currently offer a tightly integrated solution of Interwoven TeamSite and ATG's Dynamo product suite to build, maintain, and extend personalized relationships with online customers. ATG and Interwoven will continue to leverage the advantages of open standards-based architecture ensuring further interoperability, greater flexibility and more rapid time to Web.

Interwoven and ATG's customers are under pressure to quickly launch entire eBusiness sites. These involve bringing together large development teams, many different Web components, as well as ever-increasing scalability and performance requirements. Among the more than 20 customers who have already turned to Dynamo and TeamSite are: Tech Republic, the IT community hub; LookSmart, a leading category-based Web Directory; and Tavolo, a specialty food and kitchenware online retailer.

"LookSmart creates and maintains one of the largest editorially reviewed directories of content on the World Wide Web. TeamSite and Dynamo allow us to standardize our content management across diverse business units and make critical changes to our Web site on a real-time basis," said Elizabeth Runyan, engineering project manager at LookSmart.

For Web developers and system integrators, the tight integration of Dynamo and TeamSite is applicable to a wide range of customer projects and offers important benefits from the ease of co-deployment and the seamless interoperability between the products. The result is fast ramp-time and coordinated vendor support for solution providers who are building up eBusiness and eCommerce practice areas.

"Our clients need rapid development and the ability to evolve their systems to stay ahead of the competition," said Kevin Smith, vice president of business development, Fort Point Partners. "The integration of TeamSite and Dynamo can provide our clients with a flexible platform that will accommodate a wide range of projects from simple personalization to sophisticated e-commerce models. Applying the right technology and tools is crucial to success."

ATG and Interwoven are building on their customer-proven success and extending their collaborative efforts through new initiatives in sales, marketing, and product development. Joint marketing activities include additional physical and online seminars, as well as trade shows and other events. The companies are investing in additional joint training of their sales organizations and are also cooperating to bring the integrated solution to more customers, more efficiently and more effectively.

"By all measures, our partnership with ATG has been a tremendous success," said Martin Brauns, president and CEO of Interwoven. "It has been great to see the market validation that comes from seeing how TeamSite and Dynamo have been so widely embraced together by our common customers over the past year."

"This is a customer-driven partnership. Our integrator partners have been eager to set up practices that efficiently bring the best solution to their customers," said Jeet Singh, president and CEO, Art Technology Group. "We've responded to their requests by ramping up the partnership with Interwoven in order to provide our joint integrator partners with the competitive advantage necessary to deliver world-class solutions to market quickly."

Interwoven, Inc.(NASDAQ: IWOV) is a leading provider of content management for the enterprise Web. Its flagship product, TeamSite, controls the development, management and deployment of business-critical Web sites. As the platform for eBusiness, Interwoven enables electronic commerce, customer relationship management, supply chain management and knowledge management for Web leaders and Fortune 1000 companies moving to the Web. TeamSite is available for both the Sun Solaris and Microsoft NT operating systems. For more information on the company and its software solutions, visit the Interwoven Web site at www.interwoven.com.tw or e-mail info@interwoven.com

Art Technology Group, Inc. ("ATG") (NASDAQ: ARTG) 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, MA with additional locations throughout the U.S. and in Europe.