Investor Relations

Also Makes it Easy to Evaluate New aspenONE Applications with Just

                             Three Clicks

BURLINGTON, Mass.--(BUSINESS WIRE)--Sept. 8, 2008--Aspen Technology, Inc. (OTC: AZPN.PK), a leading provider of software and services to the process industries, today announced the launch of the Aspen Licensing Center. The secure, web-based licensing center provides customers with insight that enables them to replicate best practices across the enterprise. It also makes it easy to evaluate new aspenONE applications with just three clicks.

    --  The Aspen Licensing Center is being introduced in conjunction
        with aspenONE V7, a groundbreaking new software release that
        enables process industry companies to achieve the seven best
        practices of engineering excellence. (See "AspenTech
        Introduces aspenONE V7" press release for more information.)

    --  At the heart of the new licensing center is AspenTech's
        innovative and flexible, token-based licensing model.
        Customers can access aspenONE applications on a "check
        out/check in" basis up to their purchased amount of tokens.
        The flexibility of the token model enables customers to access
        and use the right software at the right time, based on their
        changing business needs.

    --  The Aspen Licensing Center provides customers with graphical
        views of how their software is being used across the
        enterprise, enabling them to identify best practice usage of
        the software.

    --  The Aspen Licensing Center also delivers 24x7, self-service
        product evaluation. With just three clicks, customers can
        download and start using aspenONE applications.

    Supporting Quote:

    Blair Wheeler, Senior Vice President of Marketing, AspenTech

    --  "With today's rapidly changing market conditions, process
        industry companies cannot afford to be locked into rigid
        software licensing models that result in shelfware. Our
        flexible token-based licensing model gives customers the
        ability to use the software they need when they need it. The
        new Aspen Licensing Center gives them unprecedented insight
        into their usage patterns to optimize the value of their
        software investment."

    Supporting Resources:

    --  Link to more information on aspenONE V7 and screen shots of
        the Aspen Licensing Center at www.aspentech.com/V7

    --  Link to AspenTech company information at
        http://www.aspentech.com/corporate/press/media_kit.cfm

    About AspenTech

AspenTech is a leading supplier of software that optimizes process manufacturing. With integrated aspenONE solutions, process manufacturers can implement best practices for optimizing their engineering, manufacturing and supply chains. As a result, AspenTech customers are better able to increase capacity, improve margins, reduce costs and become more energy efficient. To see how the world's leading process manufacturers rely on AspenTech to achieve their operational excellence goals, visit www.aspentech.com.

(C) 2008 Aspen Technology, Inc. AspenTech, aspenONE and the Aspen leaf logo are trademarks of Aspen Technology, Inc. All rights reserved. All other trademarks are property of their respective owners.

    CONTACT: Aspen Technology, Inc.
             Erik Mason, 781-221-8386
             AspenTech
             erik.mason@aspentech.com
             or
             North America
             Lois Paul & Partners (for AspenTech)
             Michael Parker, 781-782-5714
             aspentech@lpp.com

    SOURCE: Aspen Technology, Inc.