ATG to Resell Enterprise Version of TeamSite 4.5 Content Management Solution Into its Extensive Network of 180 ATG Integrator Partners and Global End-User Customer Base

SAN FRANCISCO, Calif. GearUp 2000 Conference, October 3, 2000 Art Technology Group ("ATG") (Nasdaq: ARTG), developer of the ATG Dynamo e-Business Platform for online customer management, and Interwoven (Nasdaq: IWOV), the leading provider of enterprise-class content management software, today announced a global alliance reseller agreement that will serve to align the two companies more firmly together. Under the terms of the agreement, ATG can resell directly to global customers, and through its extensive network of solution partners, an enterprise version of Interwoven TeamSite 4.5, bringing the benefits of a single, ready-to-deploy solution to e-businesses worldwide.

Integration of a robust content management product with the enterprise web platform is one of the most critical issues facing organizations, said Bob Airasian, president of BellSouth.com, Inc. We are working with both iPlanet and Interwoven to help us build a world-class customer experience.

"ATG and Interwoven have had a long history of mutual support for each other's products. More importantly, we also have the validation from over 100 joint customers that are already implementing the Dynamo-TeamSite solution," said Jeet Singh, CEO of ATG. "This reseller agreement underscores our ongoing commitment to open standards technology and in delivering a best-of-breed solution that brings the competitive advantage of scalability, flexibility and fast time-to-Web that is critical in today's climate."

"Our extensive list of joint ATG implementations is a testament to the success of our joint offering, and today's announcement demonstrates further our commitment to the ATG Dynamo e-Business platform," said Martin Brauns, CEO of Interwoven. "We have worked very closely with ATG to streamline the implementation process for customers so they can reap the benefits of our joint solution as quickly as possible. Today's announcement is yet another way we can continue to provide our customers with the solutions they need to succeed online."

Currently Interwoven TeamSite supports the iPlanet Web Server. Integration with iPlanet Application Server 6.0 is scheduled for completion in Q4 2000. In addition, joint customers are able to use TeamSite to manage content contributions to portals built with iPlanet Portal Server.

As with previous product versions, ATG and Interwoven have jointly integrated Dynamo 5 and TeamSite 4.5 software to take advantage of each product suites' new features. The integration between the new products includes full support of ATG Dynamo e-business scenarios, a framework that empowers business managers to optimize personalized customer interactions across the enterprise, and which form the centerpiece of Dynamo 5. In addition to overall integration of TeamSite 4.5 and Dynamo 5, Interwoven's new version 4.5 of XML-based TeamSite Templating fully supports the new ATG Dynamo 5 SQL adapter for database content creation and management. ATG will also resell Interwoven Open Deploy, content replication software.

Interwoven, Inc. (NASDAQ: IWOV) is the leading provider of enterprise-class Web content management software. 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. For more information on the company and its software solutions, visit the Interwoven Web site at www.interwoven.cn or e-mail info@interwoven.com

Art Technology Group, Inc. (ATG) is a leading provider of online customer 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. The ATG Dynamo e-Business Platform 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.

With its network of more than 180 solution partners, ATG has delivered e-business solutions to over 425 companies worldwide including 3M, Aetna Services, Inc., American Airlines, BabyCenter, Blockbuster, BMG Direct, ChipCenter, Eastman Kodak, Herman Miller, HSBC, J. Crew, Network Solutions, Sun Microsystems, and Target. The company is headquartered in Cambridge, Massachusetts with additional locations throughout North America, Europe, Asia and Australia.