WESTFORD, Mass, USA, March 28, 2006 - Dassault Systèmes (NASDAQ: DASTY; Euronext Paris: #13065, DSY.PA), a world leader in 3D and Product Lifecycle Management (PLM) solutions, today announced that A.O. Smith Electrical Products Company, a $1 billion division of A.O. Smith Corp. (NYSE:AOS), has purchased the ENOVIA MatrixOne PLM solution. ENOVIA MatrixOne will help A. O. Smith Electrical Products Company integrate global design, manufacturing and resource planning to deliver products more quickly to market. The company is one North America’s largest manufacturers of electric motors for residential, commercial, and industrial applications.

“We’re adopting ENOVIA MatrixOne as the technology foundation of a comprehensive PLM strategy to optimize our global engineering organization, which spans the United States, Mexico and China,” said Steve Robbins, A.O. Smith’s vice president of engineering and information technology. “We aim to drive costs out of our product introduction efforts, gain real-time control of multiple projects, and make decisions that most benefit our customers, partners, suppliers and shareholders.”

• Leveraging global design in one integrated solution;

• Centralization of product data for universal accessibility and reuse;

• Deployment of common development systems and processes;

• Efficient management of product changes; and

• Sharing of data among all enterprise systems.

ENOVIA MatrixOne provides best-in-class collaborative product development processes for enterprises across a wide range of industries, including aerospace, automotive, apparel, consumer products, high-tech/semiconductor and medical devices. By helping companies reduce development costs, gain access to real-time data and speed product introductions, ENOVIA MatrixOne PLM is enabling companies to increase the potential return on their new product innovations.

About Dassault Systèmes

As a world leader in 3D and Product Lifecycle Management (PLM) solutions, the Dassault Systèmes group brings value to more than 90,000 customers in 80 countries. A pioneer in the 3D software market since 1981, Dassault Systèmes develops and markets PLM application software and services that support industrial processes and provide a 3D vision of the entire lifecycle of products from conception to maintenance. The Dassault Systèmes portfolio consists of CATIA for designing the virtual product - SolidWorks for 3D mechanical design - DELMIA for virtual production - SIMULIA for virtual testing and ENOVIA for global collaborative lifecycle management, including ENOVIA VPLM, ENOVIA MatrixOne and ENOVIA SmarTeam. Dassault Systèmes is listed on the Nasdaq (DASTY) and Euronext Paris (#13065, DSY.PA) stock exchanges. For more information, visit : http://www.3ds.com