1.4 Relationship to Other Protocols
A client that implements this protocol can use the Autodiscover Publishing and Lookup SOAP-Based Web Service Protocol, as described in [MS-OXWSADISC], or the Autodiscover Publishing and Lookup Protocol, as described in [MS-OXDSCLI], to identify the target endpoint (4) to use for each operation.
This protocol uses the SOAP Protocol, as described in [SOAP1.1], to specify the structure information exchanged between the client and the server. This protocol uses the XML Protocol, as described in [XMLSCHEMA1] and [XMLSCHEMA2], to describe the message content sent to and from the server.
The Conversations Web Service Protocol uses the SOAP Protocol, as described in [SOAP1.1], over Hypertext Transfer Protocol (HTTP), as described in [RFC2616], or Hypertext Transfer Protocol over Secure Sockets Layer (HTTPS), which is described in [RFC2818], as shown in the following layering diagram.
For conceptual background information and overviews of the relationships and interactions between this and other protocols, see [MS-OXPROTO].