ATG and Autonomy Announce OEM and Reseller Relationship; Autonomy's Technology Will Power New ATG Search Module in ATG6, Providing Advanced Information Retrieval.

Business/Technology Editors

CAMBRIDGE, Mass. & SAN FRANCISCO--(BUSINESS WIRE)--Aug. 12, 2002

ATG (Art Technology Group, Inc., Nasdaq: ARTG), a leading developer of online CRM applications for commerce, portals, and relationship management, and Autonomy Corporation plc (Nasdaq: AUTN; LSE: AU.; Nasdaq Europe: AUTN), a global leader in infrastructure software for the enterprise, today announced an OEM and reseller relationship. Under terms of the agreement, Autonomy will provide advanced enterprise information retrieval capabilities for the ATG Search Module, a key component of ATG6, which was unveiled today (see separate announcement).

Autonomy's infrastructure technology will provide the backbone for ATG Search, a full-featured enterprise retrieval application tightly integrated with the ATG Relationship Management Platform, and the ATG Commerce and ATG Portal solutions. Leveraging ATG Data Anywhere Architecture(TM)(DAA), which enables access to information from multiple sources without moving or replicating data, ATG Search allows users to retrieve and index all the content required as part of their ATG applications - including file and database content accessed using DAA and content stored on internal and external Web sites.

Autonomy's unique technology integrates unstructured, semi-structured, and structured information from multiple repositories through an understanding of the content and then delivers it to the user. At the heart of Autonomy's software is its ability to analyze text and voice, regardless of language, and identify and rank the main concepts within it. This concept-based approach delivers more accurate and relevant information than keyword-based solutions.

"We are partnering with the industry's premier enterprise infrastructure vendor Autonomy to add this critical component to the ATG6 solution," said Fumi Matsumoto, vice president of technology, ATG. "The ability to easily retrieve information regardless of where it resides across the enterprise, combined with our existing personalization capabilities, provides a powerful value proposition to our entire range of customers and partners."

With its advanced functionality and tight integration with ATG online CRM solutions, ATG Search can help companies drive sales, improve service, and increase productivity while also yielding savings in terms of time-to-market and implementation costs.

"This partnership was a natural fit and creates a relationship that will be beneficial to both companies," Autonomy co-founder and chief technology officer, Richard Gaunt, said. "Our enterprise infrastructure helps ATG extend their already comprehensive ATG Commerce and ATG Portal solutions for online sales, marketing, and support. In addition, it helps ATG to provide one of the most competitive solutions available for portals."

ATG Search provides unique value to each of the primary components of ATG6:

ATG Commerce: ATG Search helps customers quickly find the products that they are looking for, increasing the likelihood of the transaction being completed, thereby driving up online sales.

ATG Portal: ATG Search works across multiple data sources to rapidly locate the self-service information that customers or employees are seeking.

"Giving customers, partners and employees the ability to quickly find the detailed information they are looking for is critical," said Gene Phifer, vice president, Gartner. "It increases sales, as customers are more likely to find relevant products and product information. Employee productivity is also enhanced, as the time to find information is decreased and the relevancy of the information retrieved is increased."

About ATG

ATG (Art Technology Group, Inc.) is a leading developer of online CRM applications that deliver an integrated, personalized experience for customers, partners and employees: the frontline of every business. Customers around the globe rely on ATG for the frontline applications that help build and manage mutually beneficial relationships. Deployed on the industry's most popular application servers, ATG solutions for commerce, portals, and relationship management are ideal for integrated e-business initiatives across the enterprise.

Today, ATG has delivered solutions to blue-chip companies worldwide, including Aetna Services, Inc., Alcatel, American Airlines, AT&T, Barclays Global Investors, Best Buy, BMG Direct, Eastman Kodak, Ford Motor Credit, HSBC, J. Crew, Sun Microsystems, Walgreen Company, and WellsFargo and government organizations including the United States Army and the USDA. The company is headquartered in Cambridge, Massachusetts, with additional locations throughout North America, Europe, and Asia. For more information about ATG, please visit our Web site at www.atg.com.

About Autonomy

Autonomy Corporation plc (Nasdaq: AUTN; Nasdaq Europe: AUTN; LSE: AU.) is a global leader in infrastructure software for the enterprise. Autonomy's technology powers applications dependent upon unstructured information including e-commerce, customer relationship management, knowledge management, enterprise information portals, enterprise resource planning and online publishing. Autonomy's customer base includes more than 575 global companies, including Hutchison 3G, Channel 4, Deutsche Bank, AT&T, AstraZeneca, BAE Systems, Ford, Ericsson, General Motors, Lucent, Royal Sun Alliance, Sun Microsystems and public sector agencies including the UK Government's Department of Trade and Industry, NASA, the US Department of Defense and the US Department of Energy. Strategic reseller and OEM partners include leading companies such as ATG, BEA, Business Objects, Computer Associates, Hewlett Packard, IBM Global Services, Oracle, Vignette and Sybase. The company has offices in North America, Europe, Asia and Australia and is on the Web at www.autonomy.com.

(c) 2002 ATG and Art Technology Group are registered trademarks of Art Technology Group, Inc. Scenario Personalization and Data Anywhere Architecture are trademarks of ATG. 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 possibility that the ATG product deployment will not be successful or significantly enhance the user's internet experience, provide a return on investment or handle user volumes, the need to adapt to rapid changes so products do not become obsolete; the possibility of errors in ATG's software products; the possibility that the solution will not make customer implementations faster and more flexible; the risks and costs of intellectual property litigation; and the possibility that the relationship with Autonomy will end. ATG undertakes no obligation to update any of the forward-looking statements after the date of this press release.

With the exception of historical information, the matters set forth in this news release are forward-looking statements that involve risks and uncertainties. A number of important factors could cause actual results to differ materially from those in the forward-looking statements. These factors include, among others, technology risks, including dependence on core technology; fluctuations in quarterly results; dependence on new product development; rapid technological and market change; reliance on sales by others; management of growth; dependence on key personnel; rapid expansion; growth of the Internet; financial risk management; and future growth subject to risks. These factors and other factors, which could cause actual results to differ materially are also discussed in the company's filings with the United States Securities and Exchange Commission, including Autonomy's Annual Report on Form 20-F and Registration Statements on Form F-1.