PrimeResponse's Prime@Vantage.com Awarded Sun Microsystem's SunTone Certification
     CAMBRIDGE, Mass.--(BUSINESS WIRE)--Nov. 2, 2000-- 
  Prime@Vantage.com(TM) Meets Sun's Strict Quality Standards To Receive 
  Certification Alongside Six Applications from Leading Vendors 
  Including Peoplesoft and BroadVision 
  Prime Response, Inc. (NASDAQ, EASDAQ: PRME), a leader in business to consumer relationship marketing, today announced that its Prime@Vantage.com(TM) relationship marketing solution was one of six new applications to receive SunTone(SM) Application Certification www.sun.com/suntone. Led by Sun Microsystems, the SunTone certification and branding program is one of the industry's first collaborative efforts to define software, hardware, applications and operational practices that help ensure guaranteed levels of performance, availability, security and uptime. The SunTone seal of approval demonstrates that PrimeResponse's Prime@Vantage.com(TM) product is designed with the highest standards necessary for successful deployment in a 24X7 enterprise environment. 
  "This certification is a recognized guarantee from one of the leaders in the Internet economy," said Peter J. Boni, CEO of PrimeResponse. "It is a vote of confidence in PrimeResponse and speaks to the quality and reliability of our Prime@Vantage.com(TM) product in delivering industry-leading relationship marketing solutions. With the SunTone Certification, our customers can feel confident that the application has met the stringent requirements of the SunTone program." 
  In an aggressive effort to drive customers to vendors offering applications and services certified through the SunTone program, Sun Micrsystems has configured the program to include a comprehensive suite of go-to-market initiatives and is boosting its worldwide sales and marketing resources to provide additional support. These initiatives include cooperative marketing, financing, consulting, training and support services. To date, more than 400 service providers, Independent Software Vendors (ISVs), Network Equipment Providers, and system and e-Integrators have joined the program and have signed a letter of intent to certify a service or application through the program. The six new applications brings the total of SunTone Certified Applications to twenty-three. There are also twenty SunTone Certified Services now available. 
  About the SunTone(SM) Certification and Branding Program 
  Launched in May 1999, The SunTone Certification and Branding Program is a collaborative effort with industry-wide support, led by Sun Microsystems to make 7-by-24 service and reliability the norm for consumer and business Internet-based services. Under the SunTone Certification and Branding Program, service providers and application service providers have endured a rigorous specification process which examines the infrastructure, operational practices, hardware, software, and overall service delivery of service providers and application service providers, to help ensure that the services or applications t(ey provide meet the program's high standards. SunTone certification is designed to give customers the confidence that every aspect of the SP's operations and infrastructure has been evaluated and judged to be reliable and high quality. 
  About PrimeResponse 
  PrimeResponse is publicly traded on NASDAQ and EASDAQ under the symbol PRME. PrimeResponse customers maximize their return on marketing investment using the Prime@Vantage relationship marketing suite. This integrated solution helps marketers build closer relationships with each customer to increase their satisfaction, boost retention and grow lifetime value. With Prime@Vantage, marketers easily create, execute and refine sophisticated direct marketing initiatives that span traditional channels (direct mail, call centers and advertising) as well as the latest electronic channels (Web, e-mail and wireless). 
  Headquartered in Cambridge, MA, with offices around the globe, PrimeResponse works with many of the world's leading companies, including 1-800-Flowers.com, Allianz, AXA, AT&T Broadband, Banca Popolare di Novara, British Telecom, Chase Manhattan Bank, CIBC, CVS, Deutsche Bank, DLJdirect, E*TRADE, priceline.com, Principal Financial, Quick & Reilly - a unit of FleetBoston Financial Corp., The Royal Bank of Scotland and Wachovia. Partners include Andersen Consulting, Business Objects, Chordiant, Clarify, DataMentors Inc., eBusiness Advantage, Fair, Isaac, HP, IBM, MarketSoft, MarketSwitch, McCann Relationship Marketing Worldwide, Mphasis-BFL, NetGenesis, Quadstone, Quaero, Sun Microsystems and Viador. For more information, visit www.primeresponse.com. 
  "Safe Harbor" Statement Under the Private Securities Litigation Reform Act With the exception of the historical information contained in this release, the matters described herein contain forward-looking statements, including but not limited to, statements that involve risk and uncertainties that may individually or mutually impact the matters herein, and cause actual results, events and performance to differ materially. These risk factors include, but are not limited to, results of future operations, technological difficulties, the results of future research, lack of product demand and market acceptance for current and future products, the effect of economic conditions, the impact of competitive products and pricing, and/or other factors outside the control of the company, which are detailed from time to time in the company's SEC reports. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. The company undertakes no obligation to release publicly the result of any revisions to these forward-looking statements that may be made to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events. 
  Prime Response, Inc., PrimeResponse, Prime@Vantage, Prime@Vantage Wireless, Prime@Vantage.com and Marketing Mission Control are trademarks and/or registered trademarks of Prime Response, Inc. All other trademarks and registered trademarks are the properties of their respective owners. 
  (c)2000 Prime Response, Inc., except as otherwise acknowledged. 
  NOTE: Sun, the Sun logo, Sun Microsystems, SunTone, and The Network Is The Computer are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and in other countries. 
  CONTACT:  
  PrimeResponse 
  Darren Horwitz 
  415 844-3104 
  dhorwitz@primeresponse.com 
  KEYWORD: MASSACHUSETTS 
  BW2273  NOV 02,2000 
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