Microsoft and Persistence Software Announce PowerTier Support for Windows DNA

REDMOND, Wash., and SAN MATEO, Calif., May 10, 1999 — Microsoft Corp. and Persistence Software Inc., a provider of transactional application servers, today announced support for the Microsoft® Windows® Distributed interNet Applications (Windows DNA) architecture. PowerTier
™for Windows DNA enables companies to integrate Persistence® PowerTier applications into Windows DNA Component Object Model (COM) and Distributed Component Object Model (DCOM) environments. In addition, Persistence announced its intention to deliver a Windows 2000 operating system-ready version of its PowerTier Servers.

“Persistence’s support of Windows DNA enables companies using PowerTier to integrate Persistence PowerTier applications into the universe of Windows DNA,”
said Jigish Avalani, group manager for Windows DNA marketing at Microsoft.
“This flexibility makes PowerTier an excellent environment for mission-critical application development and deployment.”

“The ability of PowerTier for Windows DNA to publish both COM and EJB server-side components provides an amazing advantage to companies that need to utilize their investment in COM and enables them to confidently pursue projects for Windows DNA,”
said Mark Douglas, chief technology officer at Persistence Software.
“It adds the versatility and flexibility required to meet the demands of the new generation of enterprise applications and empowers developers to build critical distributed systems for effective e-commerce.”

About PowerTier

PowerTier is a highly scalable transactional application server that includes features such as PowerSync
™, providing stateful load-balancing and failover, and support for DCOM and Remote Method Invocation/Internet InterOrb Protocol (RMI/IIOP), enabling enterprise interoperability. PowerTier for Windows DNA will provide a comprehensive combination of Java and C++ development wizards, run-time application services, and management tools that dramatically increase developer productivity while ensuring the performance, scalability and reliability required by the new generation of mission-critical Internet applications. PowerTier for Windows DNA includes object-relational mapping, secure transaction processing, in-memory object caching, and server-to-server cache synchronization, enabling companies to build high-availability systems that scale to support large numbers of users and transactions on the Windows NT® operating system.

About Windows DNA

Windows DNA is the application development model for the Windows platform. It specifies how to develop robust, scalable, distributed applications using the Windows platform, extend existing data and external applications to the Internet, and support a wide range of client devices maximizing the reach of an application. The Windows DNA architecture enables ISVs and organizations to solve industry-specific challenges, while lowering costs associated with deploying and managing information technology systems. For more information on Windows DNA, please visit .

About Persistence Software

Persistence Software designs and develops transactional application servers, providing the foundation for distributed business processing. The Persistence PowerTier family includes

PowerTier for Enterprise JavaBeans (EJB) and PowerTier for C++. PowerTier reduces development time with container-managed persistent objects and optimizes performance with shared transactional caching. Persistence couples standards-based products with technology transition services to assist customers in building data-intensive, distributed applications. Persistence products are in use today in over 30 of the Fortune 100 and at more than
200 Global 1,000 companies. Persistence was founded in 1991 in San Mateo, Calif., and has its European headquarters in London. For more information, visit .

About Microsoft

Founded in 1975, Microsoft (Nasdaq
) is the worldwide leader in software for personal computers. The company offers a wide range of products and services for business and personal use, each designed with the mission of making it easier and more enjoyable for people to take advantage of the full power of personal computing everyday.

Microsoft, Windows and Windows NT are either registered trademarks or trademarks of Microsoft Corp. in the United States and/or other countries.

©1999, Persistence Software Inc. Persistence is a registered trademark and PowerTier and PowerSynch are trademarks 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.

Other product and company names herein may be trademarks of their respective owners.

Note to editors: If you are interested in viewing additional information on Microsoft, please visit the Microsoft Web page at on Microsoft’s corporate information pages.

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