IBM WebSphere Application Server is a high-performance and extremely scalable transaction engine for dynamic e-business applications. The Open Services Infrastructure allows companies to deploy a core operating environment that works as a reliable foundation capable of handling high volume secure transactions and Web services.

WebSphere continues the evolution to a single Web services-enabled, Java 2 Enterprise Edition (J2EE) application server and development environment that addresses the essential elements needed for an on demand operating environment. With WebSphere Application Server V5.1, WebSphere demonstrates its continued commitment to the realization of the IBM e-business on demand vision with new platforms and important functional enhancements, including support for SDK 1.4.