Capabilities to be Enhanced for Managing Flow and Thermal Simulations within Leading PLM Environment

Paris, France, Melville, New York, & London, England. June 2007

Dassault Systèmes (DS) (Nasdaq: DASTY; Euronext Paris: #13065, DSY.PA), a world leader in 3D and Product Lifecycle Management (PLM) solutions, today announced that CD-adapco, a leading global provider of full-spectrum engineering simulation solutions for fluid flow, heat transfer and stress, is now a Component Application Architecture (CAA) Software Partner.

“CD-adapco’s commitment to integration with CATIA and SIMULIA is a key factor in upgrading CD-adapco to CAA Software Partner status,” states Ken Short, VP strategy and marketing, SIMULIA, Dassault Systèmes. “By taking our business relationship to the next level of technical collaboration, CD-adapco will be able to work more closely with our R&D teams to enhance the integration, capabilities, and scalability of their solutions within the world’s leading PLM environment.”

“We share a common vision with Dassault Systèmes of providing robust simulation solutions to designers and analysts through a collaborative PLM environment,” states Dennis Nagy, VP of marketing and business development, CD-adapco. “DS’s open CAA environment ensures that we are able to provide our common customers with advanced simulation technology to gain insight into product performance and deliver innovative products to market faster while lowering development costs.”

As a CAA Software Partner, CD-adapco will leverage DS’s CAA environment to extend and enhance the capabilities of their proven STAR-CAT5 product for flow and thermal management integrated within CATIA. Simulation set-up and input/output requirements have been automated and integrated into CATIA, enabling users across many industries, including automotive, aerospace, oil and gas, electronics, and pharmaceuticals to concentrate on evaluation of engineering results and optimization of designs while taking full advantage of CD-adapco’s advanced simulation technology.

CAA is DS’s open middleware and development environment for PLM. The CAA Software Community Program is dedicated to ISVs (Independent Software Vendors) willing to develop, sell and support CAA-based applications, fully integrated with CATIA, SIMULIA, ENOVIA and DELMIA. This collaboration results in the expansion of DS's 3D PLM solutions to cover the entire product lifecycle range, thus enabling mutual customers to take advantage of a larger set of products in response to their specific industrial needs. More information is available at http://www.3ds.com/alliances/software-partnership/

Partners, customers, and professionals from DS will gather at DEVCON, Dassault Systèmes developer conference in Paris, on June 26-27, 2007, to learn how to leverage the CAA partner program and discover the latest information about DS’s key technological advances. More information on DEVCON can be found at http://www.3ds.com/news-events/devcon

About CD-adapco CD-adapco is the leading global provider of full-spectrum engineering simulation (CAE) solutions for fluid flow, heat transfer and stress, with principal offices in New York, London and Yokohama and subsidiary offices across the world. STAR-CD and STAR-CCM+ provide the world’s most comprehensive CFD solutions, with the STAR-CAD Series as an easy-to-use, CAD-embedded front door to the full spectrum of CD-adapco solutions, backed by 25 years of extensive experience in CAE consulting. http://www.cd-adapco.com/starcadseries

About Dassault Systèmes As a world leader in 3D and Product Lifecycle Management (PLM) solutions, Dassault Systèmes brings value to more than 100,000 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

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

CD-adapco Press Contact:

Amanda Batson Tel: +44 (0) 207 471 6200 amanda.batson@uk.cd-adapco.com

Dassault Systèmes Press Contacts:

Tim Webb (SIMULIA) Tel: +1(401)276-8105 tim.webb@simulia.com

Derek Lane (Americas) +1(818) 673-2243 derek_lane@ds-us.com

Mikiko Igarashi (AP) +81-3-5442-4138 mikiko_igarashi@ds-jp.com

Arnaud Malherbe (EMEA) +33 (0)1 55 49 87 73 arnaud_malherbe@ds-fr.com