DSM Signs New Corporate Agreement for AspenTech's Engineering and Innovation Solutions

November 22, 2004
aspenONE(TM) solutions provide the standard platform for the design and optimization of the company's global manufacturing plants

CAMBRIDGE, Mass.--(BUSINESS WIRE)--Nov. 22, 2004-- Aspen Technology, Inc. (Nasdaq: AZPNE) today announced that DSM, a leading global producer of life science and nutritional products, performance materials and industrial chemicals, has signed a new multi-year software license agreement for AspenTech's engineering and innovation solutions. Through the agreement, DSM confirms its commitment to the solutions as its standard modeling platform for the design and optimization of its manufacturing processes. The solutions enable DSM to improve the design and operational performance of its plant assets, maximizing the return on capital employed.

"AspenTech's engineering solutions provide us with an integrated set of tools to drive increased productivity across all our sites," said Geert-Jan de Laat, Competence Manager Modeling, DSM TechnoPartners. "By applying a consistent set of simulation models we can remove bottlenecks from our processes and achieve greater manufacturing efficiency. The solutions also increase the speed at which we get our goods to market, by integrating process development and design more efficiently, so that we can respond more quickly to our customers' requirements."

The new agreement provides DSM with global access to a broad range of aspenONE(TM) Engineering and Innovation solutions including the modules for Simulation & Optimization, Conceptual Design, Integrated Engineering, Economic Evaluation and Equipment Design & Rating. The agreement is based on a flexible token system that is simple and economical to manage, and which allows DSM engineers to utilize the combination of products they require to undertake a specific project.

The integrated aspenONE solutions will enable DSM to find the optimum ways to realize capital improvements, execute projects in the shortest time and maximize the operational performance of each manufacturing plant. Based on open standards, AspenTech's engineering and innovation technologies allow the company to use the best available tools for each part of an engineering program, managing process assets from planning and design through to operations and process improvement.

"The decision by DSM to extend its commitment to our engineering solutions marks another significant development in our strong partnership," said David McQuillin, President and CEO of AspenTech. "The aspenONE Engineering and Innovation modules use an integrated, model-based approach that enables them to deliver significant economic benefits at all stages of the plant lifecycle, from the concept phase right through to operational decision-making and real-time optimization."

About DSM

DSM is active worldwide in life science and nutritional products, performance materials and industrial chemicals. The company creates innovative products and services that help improve the quality of life. DSM's products are being applied in a wide range of end markets and applications such as human and animal nutrition and health, cosmetics, pharmaceuticals, automotive and transport, coatings, housing and electrics & electronics (E & E). The group has annual sales (pro forma including the recent acquisition - renamed DSM Nutritional Products) of approximately EUR 8 billion and employs in the region of 25,000 people around the world. DSM ranks among the global leaders in many of its fields. DSM is headquartered in the Netherlands, with locations in Europe, Asia and the Americas. For more information, visit www.dsm.com.

About AspenTech

Aspen Technology, Inc. provides industry-leading software and implementation services that enable process companies to use simulation models to increase efficiency and profitability. aspenONE, a new generation of software solutions from AspenTech, represents a major step forward in helping process manufacturers achieve their strategic operational excellence initiatives. The first comprehensive offering to address the demands of the Enterprise Operations Management (EOM) market, aspenONE provides companies with integrated systems that enable them to manage and optimize their operational performance. Over 1,500 leading companies already rely on AspenTech's software, including Aventis, Bayer, BASF, BP, ChevronTexaco, Dow Chemical, DuPont, ExxonMobil, Fluor, GlaxoSmithKline, Shell, and Total. For more information, visit www.aspentech.com.

Certain paragraphs of this press release contain forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, particularly the first paragraph. For this purpose, any statement using the term "will," "should," "could," "anticipates," "believes" or a comparable term is a forward-looking statement. Actual results may vary significantly from AspenTech's expectations based on a number of risks and uncertainties, including: AspenTech's ability to make its revenue goals; AspenTech's lengthy sales cycle which makes it difficult to predict quarterly operating results; fluctuations in AspenTech's quarterly operating results; AspenTech's dependence on customers in cyclical industries; adverse global economic conditions; AspenTech's ability to raise additional capital as required; the FTC's investigation of the Hyprotech acquisition; the outcome of AspenTech's restructuring plans; intense competition; AspenTech's need to develop and market products successfully; and other risk factors described from time to time in AspenTech's periodic reports and registration statements filed with the Securities and Exchange Commission. AspenTech cannot guarantee any future results, levels of activity, performance, or achievements. Moreover, neither AspenTech nor anyone else assumes responsibility for the accuracy and completeness of any forward-looking statements. AspenTech undertakes no obligation to update any of the forward-looking statements after the date of this press release.

AspenTech, aspenONE and the aspen leaf logo are trademarks of Aspen Technology, Inc., Cambridge, Mass.

CONTACT:
For Media:
Aspen Technology, Inc.
Robin Swanger, 218-504-3256
robin.swanger@aspentech.com

For Investors:
Aspen Technology, Inc.
Joshua Young, 617-949-1274
joshua.young@aspentech.com