Persistence Software and TIBCO Software Offer Comprehensive E-Commerce Platform for Mission Critical B2B.

Business Editors/High Tech Writers

SAN MATEO, Calif.--(BUSINESS WIRE)--Feb. 22, 2000

PowerTier with TIB/ActiveEnterprise provides complete e-business

technology infrastructure for enterprise customers

Persistence Software (Nasdaq: PRSW), The Engine for E-Commerce(tm), today announced it has entered into a licensing agreement with TIBCO Software Inc. (Nasdaq: TIBX) to resell TIBCO's real-time e-business infrastructure platform, TIB(R)/ActiveEnterprise(R), with its PowerTier(tm) application server. PowerTier has the unique ability to cache and synchronize data across multiple servers while TIB/ActiveEnterprise enables real-time business process integration. The proven combination of PowerTier and TIB/ActiveEnterprise has already been validated in a mission-critical environment at the world's largest agency brokerage firm, Instinet Fixed Income, a wholly-owned subsidiary of Reuters Group PLC. Persistence will market and support the combined products, further proving itself as the high-end provider of complete technology infrastructures for customers' modern B2B e-commerce applications.

"B2B e-commerce will soon represent the largest segment of e-commerce," said Vivek Ranadiv, chairman and CEO of TIBCO Software. "The combination of TIBCO's world-class infrastructure software and Persistence's patented technology provides customers with a comprehensive B2B e-commerce solution."

TIB/ActiveEnterprise is a real-time e-business infrastructure platform for scalable, high availability services across heterogeneous applications and platforms. Disparate enterprise and e-business applications tied together by TIB/ActiveEnterprise exchange data transparently -- over local networks, throughout the enterprise, and across the Internet. Coupled with TIB/ActiveEnterprise software, PowerTier e-commerce servers form a scalable, fault-tolerant network of processing servers. The complimentary technology will enhance e-commerce business processes and applications with real-time delivery and synchronized messaging between servers.

"Customers are no longer looking for point solutions. Instead, they want a complete solution from one vendor," commented Chris Keene, chief executive officer, Persistence Software. "With the addition of TIB/ActiveEnterprise software, PowerTier networks are now enhanced with e-business infrastructure, which is a tremendous advantage for customers."

About TIBCO Software

TIBCO Software Inc. (Nasdaq: TIBX) is a leading provider of real-time infrastructure software for e-business. TIBCO's products and services enable computer applications and platforms to communicate efficiently across networks. The TIB(R)/ActiveEnterprise(R) product suite facilitates the distribution of information and integration of business processes by connecting applications to a network through patented technology called The Information Bus(R) or TIB. TIB technology was first used to "digitize" Wall Street and has been adopted in diverse industries, including manufacturing, energy, telecommunications, and electronic commerce. TIBCO Software's global client base includes Cisco, Yahoo!, NEC, 3Com, Sun Microsystems, SAP, Philips, AT&T and AOL/Netscape. Headquartered in Palo Alto, California, TIBCO Software can be reached at [phone] or on the web at www.tibco.com.

About Persistence Software

Persistence Software, The Engine for E-Commerce(tm), empowers customers with a comprehensive e-commerce infrastructure, providing solutions for companies in the early stages of developing an architecture to those building large-scale enterprise systems. Persistence's patented caching technology harnesses the power of the Internet and enables customers to create a highly personalized e-commerce experience. The PowerTier product family delivers concrete business advantages through rapid development, scalability, reliability, and business integration. Combined with the company's consulting, education, and support services, Persistence is providing the technology for customers such as Cisco, FedEx, and Instinet to build some of the world's most innovative and reliable e-commerce architectures. Persistence Software (Nasdaq: PRSW) was founded in 1991, and is headquartered in San Mateo, California. For more information, visit Persistence at www.persistence.com.

TIBCO, TIB/ActiveEnterprise, TIB/Rendezvous, The Information Bus and TIB are trademarks or registered trademarks of TIBCO Software Inc. Legal Notice Regarding Forward-Looking Statements: This release may contain forward-looking statements regarding TIBCO's business, customers or other factors that may affect future earnings or financial results. Actual results could differ materially from those projected in such forward-looking statements. Additional information concerning factors that could cause our actual results to differ materially from those contained in the forward-looking statements can be found in TIBCO Software's filings with the Securities and Exchange Commission ("SEC"), including but not limited to its registration statement on Form S-1 which was declared effective by the SEC on July 13, 1999, and the most recent reports on Form 10-Q, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements including limited independent operating history, history of losses, unpredictability of future revenue, dependence on a limited number of customers, relationship with Reuters Group PLC, rapid technological and market changes, risks associated with infrastructure software, and volatility of stock price. Copies of filings made with the SEC are available through the SEC's electronic data gather analysis and retrieval system (EDGAR) at www.sec.gov. TIBCO assumes no obligation to update the forward-looking statements included in this document.

Except for the historical information contained herein, the matters discussed in this news release are forward-looking statements involving risks and uncertainties, which could cause actual results to differ materially from those in such forward-looking statements. Potential risks and uncertainties include, but are not limited to, Persistence Software's limited operating history, potential fluctuations in our operating results, uncertainties related to our long sales cycle, our reliance on a relatively small number of customers, our dependence on the Java programming language and the Enterprise JavaBeans standard becoming widely accepted standards, failure to manage our growth or attract and retain the services of key employees, our need to deliver products that meet rapidly changing technology standards, our need to build a strong direct sales team and develop third party sales channels, our dependence on the deployment of enterprise-wide system deployments, and our need to address competition from companies with substantially greater resources. Further information regarding these and other risks is included in our prospectus dated June 24, 1999 and in our other filings with the Securities and Exchange Commission.

(c) 1999 Persistence Software Inc. Persistence is a registered trademark and PowerTier is a trademark of Persistence Software Inc. in the United States and other countries. Persistence currently holds U.S. Patents Nos. 5,499,371; 5,615,362; 5,706,506. All other product, trademark, company, or service names mentioned herein are the property of their respective owners.