The ebMS (ebXML Message Service) is a specification that extends the SOAP message. The additions enable:

• Reliable messaging across a route (not just hops)
• The use of intermediaries as routers · Service level agreements in accordance with a collaboration protocol agreement
• The ability to identify the payload via a manifest
• Secure signatures for the message

ebMS also defines its own transport protocol bindings. This is necessary because it defines some of its payload outside of the SOAP envelope. Note that ebMS does NOT provide message correlation facilities.