This graphic shows OSES in the top left corner. To the right, with arrows back and forth to OSES, is Oracle Internet Directory. Underneath that, with arrows back and forth to Oracle Internet Directory, is the OracleAS Single Sign-On Server. To the left of the SSO Server (and underneath OSES) is Oracle HTTP Server, with arrows back and forth to the SSO Server. This has arrows pointing back and forth back up to OSES. Also, to the left of the diagram is an HTTP clint connecting via HTTP or HTTPS to the Oracle HTTP Server.