Dassault Systemes Opens ENOVIA MatrixOne Global Customer Conference with Keynote Speakers from Sony Ericsson, The Barilla Group, Guess?, Inc. and Tower Semiconductor.

The World's Most Innovative Product Companies Gather to Discuss the Role of PLM in Driving Collaboration, Innovation and Acceleration for New Product Introduction

WESTFORD, Mass. -- International leaders in apparel, automotive, consumer products, high-tech, and other major industries are convening in Grapevine, Texas today for Dassault Systemes' (Nasdaq: DASTY; Euronext Paris: #13065, DSY.PA) ENOVIA MatrixOne Global Customer Conference (GCC) the company announced today.

The four-day forum features some of the world's most innovative companies describing how they use PLM solutions from ENOVIA MatrixOne, a product line of PLM industry leader Dassault Systemes, to drive business value and gain competitive advantages by reducing new product introduction costs, managing supplier networks, extending design expertise across the global enterprise, designing for environmental compliance, improving quality and accelerating time to market. Sony Ericsson CIO Colin Boyd will deliver the customer keynote address. Boyd will describe how his company's ENOVIA MatrixOne PLM program helped accelerate product innovation to achieve market goals.

Also keynoting the event will be Dassault Systemes CEO Bernard Charles; ENOVIA CEO Joel Lemke; Senior Vice President of ENOVIA MatrixOne Mike Segal; and Vice President of AMR Research and PLM expert Mike Burkett. Burkett, who will deliver the analyst keynote speech, co-wrote the first definitive report on PLM and is considered one of the driving forces in popularizing the term's use. Charles will discuss Dassault Systemes' vision for bringing the power of PLM to a wide range of new users in existing and new markets. The solutions and services developed by Dassault Systemes today give shape to Charles' vision of leveraging the power of 3D to help companies develop, simulate, and optimize the complete lifecycle of their products, and preserve the environment for the future.

The GCC2006 Platinum sponsor is Geometric Software, a leading provider of PLM and engineering services and a strategic research and development (R&D) partner for Dassault Systemes and ENOVIA MatrixOne. Additional sponsors include Cambridge Solutions, Archer Grey, BearingPoint, Integware, Kalypso, Sogeti, Sun Microsystems, Tata Consulting Services, Walter Wilhelm Associates, and United Technology Solutions.

The GCC agenda includes an executive roundtable scheduled for Tues., Nov. 14, featuring the CIOs of The Barilla Group, Guess?, Inc., and Tower Semiconductor Ltd. They will discuss their companies' top-level business challenges, how PLM solutions help meet them, and how they measure their PLM programs' successes. Industry-focused sessions on Nov. 14 and 15 will feature organizations sharing their experience with ENOVIA MatrixOne PLM solutions. Among the companies speaking at breakout sessions are Agere Systems, Arvin Meritor, Eaton Aerospace, EcoLab, Honda, Lawrence Livermore Laboratories, ARL Penn State University, Medtronic ERS, Johnson & Johnson, Qualcomm and Tektronix.

"PLM solutions have emerged as a true competitive differentiator, enabling companies to accelerate time to market, promote innovation, and realize the full value of their intellectual property," said Mike Segal, senior vice president of sales, marketing and operations for ENOVIA MatrixOne. "We continue to invest in leading-edge technology which enables us to create and deliver industry-specific, best-in-class business process solutions that bring PLM to a very strategic level. GCC will showcase our vision and solutions at work in some of the world's most successful companies."

Please visit http://www.matrixone.com/gcc/index.html for more details on GCC 2006.

This press release may contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21 E of the Securities and Exchange Act of 1934, as amended, which reflect Dassault Systemes' current judgment on certain issues. Because such statements apply to future events, they are subject to risk and uncertainties that could cause the actual results to differ materially. Important factors, which could cause actual results to differ materially, are described in the Company's reports on Form 20-F and 6-K on file with the Securities and Exchange Commission.

About ENOVIA MatrixOne

MatrixOne, Inc. was acquired by Paris-based Dassault Systemes in May, 2006 and today is part of its ENOVIA PLM Collaborative Environment family of solutions. The ENOVIA MatrixOne solutions enable companies to accelerate product innovation to achieve top line revenue growth and improve bottom line profitability. ENOVIA MatrixOne is focused on helping companies across the automotive, aerospace & defense, consumer, machinery, medical device, semiconductor and high-tech industries solve their most challenging new product development and introduction problems. More than 850 companies use ENOVIA MatrixOne solutions to drive business value and gain a competitive advantage, including industry leaders such as BAE Systems, Bosch, Comau, General Electric, Honda, Johnson Controls, Linde AG, NCR, New Balance, Nokia, Philips, Porsche, Procter & Gamble, REI, Sony Ericsson, STMicroelectronics and Toshiba. ENOVIA MatrixOne (www.matrixone.com) is headquartered in Westford, Massachusetts, with locations throughout North America, Europe and Asia-Pacific.

About Dassault Systemes

As a world leader in 3D and Product Lifecycle Management (PLM) solutions, the Dassault Systemes group brings value to more than 90,000 customers in 80 countries. A pioneer in the 3D software market since 1981, Dassault Systemes 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 Systemes 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 Systemes is listed on the Nasdaq (DASTY) and Euronext Paris (#13065, DSY.PA) stock exchanges. For more information, visit http://www.3ds.com.

CATIA, DELMIA, ENOVIA, SIMULIA and SolidWorks are registered trademarks of Dassault Systemes or its subsidiaries in the US and/or other countries.