ATG and Moai Personalize B2B Marketplaces for the Global 2000; Customers to Build Scalable e-Commerce Infrastuctures for Online Negotiations with ATG Dynamo and Moai's LiveExchange.

Business/Technology Editors

CAMBRIDGE, Mass. & SAN FRANCISCO--(BUSINESS WIRE)--Dec. 19, 2000

Art Technology Group, Inc. ("ATG") (Nasdaq:ARTG), developer of the ATG Dynamo(R) e-Business Platform for online customer management, and Moai Technologies, Inc., a leading provider of e-commerce infrastructure for online negotiation solutions, today announced a strategic alliance to bring ATG Dynamo and Moai's LiveExchange(TM) to Global 2000 companies that want to build public and private B2B marketplaces. By working with customers to integrate ATG Dynamo and LiveExchange, buy-side and sell-side users will be able to shorten time-to-market and speed return-on-investment for online transactions, such as providing structured negotiations for strategic sourcing and selling, and integrated solutions for forward and reverse auctions.

ATG's customer management platform paired with Moai's online negotiations solutions will create a reliable, efficient and personalized B2B experience for both spot purchases and strategic sourcing. By licensing technology from both ATG and Moai along with pre-developed integration strategies, joint B2B enterprise customers will be able to deploy ATG Dynamo e-Business Scenarios to build e-commerce infrastructure and order management, and use LiveExchange to automate online procurement through auctions and reverse auctions. The ATG and Moai alliance will give customers customized and dependable online exchanges for business-to-business relationships.

"Any company looking to move their established business practices to the Web demands that the migration be efficient and quickly delivers a return on investment," said Matt Miller, CEO and president of Moai. "Through this alliance, Moai and ATG will provide both suppliers and buyers with the tools necessary to bring their procurement strategies online, while promoting one-on-one business relationships."

ATG Dynamo and LiveExchange share a similar architecture, which will promote smoother integration for customers. Both ATG Dynamo and LiveExchange are Java-based environments with scalable and open architectures based on definable business rules; this architecture successfully provides the functionality of an application with the flexibility of a standards-based platform.

"Personalized business relationships are just as critical online as they are in the offline world," said Jeet Singh, CEO of ATG. "Working together with Moai we're able to offer companies engaged in online B2B commerce the ability to enhance loyal business relationships while realizing all the efficiencies and consistencies of conducting business online."

"Companies looking to the Web to meet their sourcing needs aren't looking to re-invent their existing business practices; they are looking for ways to make their established processes more efficient," said Johnny Vega, CEO of PoultryFirst.com. "As a customer of both ATG and Moai, we are excited by the new possibilities ATG Dynamo and LiveExchange integration present for our e-commerce strategy. Being able to work with these two proven products will help us create a truly competitive online marketplace that brings buyers and suppliers together, and can adapt to their evolving needs."

About Moai Technologies

Moai is an e-commerce infrastructure provider, offering online negotiation solutions that can lower costs and raise profit margins. By automating contract negotiations and bringing traditional bidding to the Web, Moai's LiveExchange(TM) solutions deliver global reach and increased supplier competition to corporations and net market makers. Many Moai customers have realized savings of 25 percent or more on purchases of materials and services and up to 70 percent in administrative overhead by leveraging LiveExchange for strategic sourcing. Moai has become a leader in the e-commerce market with more than 140 customers worldwide. Moai investors include market leaders such as Andersen Consulting, BroadVision, Hewlett-Packard, Intel, Merrill Lynch, Reuters, and UPS.

Founded in 1996, Moai Technologies, Inc., is headquartered at 25 Lusk Street, San Francisco, CA 94107, telephone: [phone]; FAX: [phone]; www.moai.com.

About ATG

ATG is a leading provider of online customer relationship management and electronic commerce products and services. ATG offers an integrated suite of Java(TM) application server-based products and services, as well as related application development, integration and support services. The ATG Dynamo(R) e-Business Platform enables Global 2000 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 225 solution partners, ATG has delivered e-business solutions to over 530 companies worldwide including 3M, Aetna Services, Inc., American Airlines, Blockbuster, BabyCenter, BMG Direct, ChipCenter, Eastman Kodak, HSBC, Herman Miller, 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.

Dynamo, 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.

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 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 need to adapt to rapid changes so products do not become obsolete; the possibility of errors in software products; the costs and risks associated with intellectual property infringement and litigation; the possibility that the strategic alliance will end; the possibility that the technologies cannot be embedded in the proposed environment; the possibility that the software will not be able to access contextual information from a particular platform; the possibility that the interaction between the products will not be seamless. The companies undertake no obligation to update any of the forward-looking statements after the date of this press release.