Andersen Consulting and Commerce One Expand Strategic Alliance to Extend Benefits of Global B2B E-Commerce.

Business Editors

PLEASANTON, Calif. & NEW YORK--(BUSINESS WIRE)--July 20, 2000

Joint Offering for Industry Vertical Marketplaces;

Relationship to Accelerate Development of

Commerce One's Global Practice

Commerce One, Inc. (Nasdaq:CMRC) and Andersen Consulting today announced that they had reached an agreement in principle to significantly expand the scope of their global strategic alliance, announced in February.

The expanded relationship is expected to enable Andersen Consulting, Commerce One and their worldwide clients to capitalize on the opportunities and efficiencies of business-to-business (B2B) electronic commerce. Definitive agreements with respect to the alliance are expected to be executed during the third quarter of 2000.

The components of the alliance are anticipated to include:

-- Commerce One and Andersen Consulting will focus on the rapid

and mutual development of global exchange marketplaces in a

variety of targeted industry vertical market segments;

-- Andersen Consulting and Commerce One will put in place aligned

organization structures to pursue mutual business

opportunities;

-- Andersen Consulting will license the Commerce One

MarketSite(TM) Portal Solution for Net Market Makers to enable

the rapid development and operation of dot.com business across

Andersen Consulting's network of 24 global Dot.Com Launch

Centres;

-- Andersen Consulting will accelerate the training of a dedicated

team of professionals to support Commerce One engagements

globally;

-- The two companies will implement Commerce One Solution Centers

in key geographies with a focus on sales support, resource

development and client development;

-- Andersen Consulting will dedicate multiple teams of

professionals to the Commerce One Professional Services 

Organization, providing critical mass and scale in business

development and customer support, and helping Commerce One meet

market demands in a global environment of sharply rising

e-commerce activity; and

-- Andersen Consulting will continue to work as Commerce One's

preferred partner for the design and development of integrated

supply chain solutions.

"We are excited to significantly expand our relationship with Commerce One to rapidly take advantage of the marketplace momentum and help our clients realize the benefits of business-to-business e-commerce," said Matt Mosetick, partner, Andersen Consulting. "Together, we will be focused on aggressively developing a variety of key industry vertical markets."

Vertical industry offerings based on the Commerce One MarketSite(TM) Portal Solution for Net Market Makers will be available in Andersen Consulting's dot.com solution centres. These turnkey solutions will add to Andersen Consulting's extensive capabilities for enabling the rapid development and operation of vertical marketplaces without disruption to business.

As a hosted service, the MarketSite(TM) Portal Solution for Net Market Makers requires little or no infrastructure investment and enables portal operators to focus on adding value to their communities by leveraging Commerce One's trading platform services, including transaction management, catalog management and auction services.

"We believe that this alliance allows us to leverage Andersen Consulting's channel power, consulting resources and execution capabilities to meet the global demand and specific market requirements for Commerce One's products and services," said Chuck Donchess, executive vice president and chief strategy officer for Commerce One.

"Andersen Consulting's commitment to the development of the market and understanding of the strategic value of e-commerce in today's global economy continue to make them a valuable partner for us."

The Andersen Consulting Dot-Com Launch Centres are located in: Atlanta, Boston, Chicago, Copenhagen, Dublin, Frankfurt, Helsinki, Johannesburg, Los Angeles, London, Madrid, Milan, New York, Oslo, Palo Alto, Paris, Sao Paolo, Seattle, Singapore, Stockholm, Sydney, Tokyo, Toronto and Washington, D.C.

About Andersen Consulting

Andersen Consulting is an $8.9 billion global management and technology consulting organization whose mission is to help its clients create their future. The firm works with clients from a wide range of industries to bring about far-reaching change by aligning their people, processes and technology with their strategy. Andersen Consulting has more than 65,000 people in 48 countries.

Andersen Consulting is recognised as a market leader in the strategic development and implementation of B2B exchanges with involvement in more than 75 global marketplaces. Its home page address is http://www.ac.com.

About Commerce One

Commerce One (Nasdaq:CMRC) is the leader in global e-commerce solutions for business. Through its products, portals, and services, Commerce One creates access to worldwide markets, allowing anyone to buy from anyone, anytime, anywhere. The Commerce One Global Trading Web(TM) is the world's largest business-to-business trading community. Comprised of many open e-marketplaces, the Global Trading Web(TM) provides unprecedented economies of scale for buying organizations, suppliers, and service providers worldwide.

Commerce One is located in Pleasanton, Calif., and can be reached by phone at 800/308-3838 or 925/520-6000 or via the Internet at http://www.commerceone.com/.

Note to Editors: Commerce One, Many Markets. One Source., Global Trading Web, BuySite, MarketSite, Global Trading Platform, Common Business Library, XML Development Kit, XML Commerce Connector, MarketView, and SupplyOrder are either trademarks or registered trademarks of Commerce One, Inc. All other company, product, and brand names are trademarks of their respective owners.

The foregoing paragraphs include forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements include statements concerning the implementation of a global strategic alliance and the potential business benefits to be realized from such alliance. These statements are subject to risks and uncertainties. Actual results may differ materially from those described in such statements as a result of a number of factors. These factors include but are not limited to the risk that Commerce One and Andersen Consulting do not enter into definitive agreements with respect to this alliance, the ability of the parties to execute on their plans for the alliance and the extent of customer adoption and utilization of Commerce One's products and solutions. For a discussion of these and other risk factors that could affect Commerce One's business, see "Risk Factors" in Commerce One's filings with the Securities and Exchange Commission, including its annual report on Form 10-K for the year ended December 31, 1999 and its quarterly report on Form 10Q for the quarter ended March 31, 2000.