Release Details

Collaboration will focus on integrated solutions combining Flour's engineering

and construction expertise and AspenTech's engineering software

ALISO VIEJO, Calif., and CAMBRIDGE, Mass., Jan. 29 /PRNewswire-FirstCall/ -- Fluor Enterprises, Inc., a subsidiary of Fluor Corporation (NYSE: FLR) and Aspen Technology, Inc. (Nasdaq: AZPN), today announced an engineering and software implementation services agreement aimed at delivering comprehensive enterprise solutions for manufacturers in the chemical and petrochemical industries. The focus of the relationship will be on helping customers deploy integrated solutions to improve capital efficiency, increase operational productivity and enhance engineering quality and efficiency as part of their long-term plant lifecycle.

(Photo: http://www.newscom.com/cgi-bin/prnh/20000811/ASPENLOGO )

By combining Fluor's project and engineering expertise with AspenTech's integrated Aspen Engineering Suite(TM) solution, the two companies will enable clients to make better facility lifecycle decisions. Through these combined strengths clients will be able to efficiently facilitate collaboration among producers, technology licensors and engineering companies across the entire plant lifecycle, which can result in better investment decisions and improved engineering efficiency.

Fluor will work closely with AspenTech's global services team to provide an integrated set of deliverables to joint clients, consisting of front end studies, site opportunity assessments, and engineering systems implementation in the chemical and petrochemical industries.

"This is another step, where Fluor, a premiere provider of engineering services, is seeking the opportunity to deliver value by aligning with the best the software industry has to offer. The cooperation between Fluor and Aspen Technology over the last seven years has proven beneficial to our shareholders and, most importantly, to our clients," states Mag Fouad, Vice President, Process Technology of Energy and Chemicals Group, Fluor Enterprises, Inc.

"Working with Fluor creates a strong, long-term relationship with a world class organization," says Larry Evans, Chairman and CEO of Aspen Technology. "Fluor has been a key customer and extensive user of our technologies, and by integrating our asset optimization solutions with Fluor's engineering expertise this new service will deliver another level of value to our joint customers."

About Fluor

Fluor Corporation provides services on a global basis in the fields of engineering, procurement, construction, operations, maintenance and project management. Headquartered in Aliso Viejo, California, Fluor is a Fortune 500 company with revenues of $10 billion in fiscal year 2000. Fluor is a publicly held corporation that trades under the symbol FLR on the New York Stock Exchange. Complete information about Fluor is available through the company's Internet site at www.fluor.com.

About AspenTech

Aspen Technology, Inc is a leading supplier of integrated software and solutions to the process industries. The company's Aspen ProfitAdvantage(TM) solution enables companies to identify and maximize profit opportunities throughout their entire value chain-from the supply of raw materials, through the production of goods, to the delivery of final products to customers. The Aspen ProfitAdvantage solution encompasses engineering, manufacturing, supply chain and e-business collaboration technologies, providing the tools that enable manufacturers to design, optimize and execute business processes in real time. Over 1,200 leading process companies already rely on AspenTech's 20 years of process industry experience to increase revenues, reduce costs and improve capital efficiency. AspenTech's customers include: Air Liquide, AstraZeneca, Bayer, BASF, BP, Chevron, Dow Chemical, DuPont, Equistar, Exxon Mobil, GlaxoSmithKline, Merck, Mitsubishi Chemical, and Unilever. 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. 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 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 the cyclical chemicals, petrochemicals and petroleum industries; AspenTech's need to hire additional qualified personnel and its dependence on key current employees; intense competition; AspenTech's dependence on systems integrators and other strategic partners; changes in the market for e-business solutions for AspenTech's customers; increased governmental regulation and taxation of e-commerce and the Internet; information security and privacy concerns relating to e-commerce; 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, ProfitAdvantage, and the aspen leaf logo are trademarks of Aspen Technology, Inc., Cambridge, Mass.

Contacts:

For Media:

Peter Watt

Aspen Technology, Inc.

+44 1223 819-752

peter.watt@aspentech.com

Carin Warner

Warner Communications

(978) 526-1960

carin@warnerpr.com

For Investors:

Joshua Young

Aspen Technology, Inc.

(617) 949-1274

joshua.young@aspentech.com

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SOURCE Aspen Technology, Inc.

CONTACT: Media: Peter Watt of Aspen Technology, Inc., +44 1223 819-752, peter.watt@aspentech.com, or Carin Warner of Warner Communications, +1-978-526-1960, carin@warnerpr.com; or Investors: Joshua Young of Aspen Technology, Inc., +1-617-949-1274, joshua.young@aspentech.com/