There are many implementations of J2EE. These include the original reference by Sun Microsystems, IBM's WebSphere Application Server, WebLogic by BEA, JRun by Macromedia, and the open source J2EE-compliant server JBoss. This article focuses on WebSphere, although it is also applicable to applications developed on any of the preceding J2EE-compliant platforms. It also examines Domino to WebSphere integration consisting of two flavors: Domino to the Web container and Domino to the EJB container.