IBM WebSphere Application Server is the foundation of the IBM WebSphere software platform for On Demand Business ”a set of integrated, award-winning e-business solutions. WAS V5 provides a rich e-business application deployment environment with a set of application services including capabilities for transaction management, Web services, security, performance, availability, connectivity, and scalability. This new version is truly the next step dynamically integrating applications with existing data stores, other applications, and Web services that exist in heterogeneous environments, in multiple programming models, and on different sides of firewalls.