Web services protocols

Following is an outline of most of the protocols used to deliver Web services. The services prefixed with the "WS-" are often called the "WS protocols" or "WS* protocols." See Web services.

 MESSAGING

  SOAP
    messaging system (see SOAP)

  MTOM (Msg Trans Optimization Mechanism)
    optimize transmission of SOAP messages

  WS-Addressing
    normalize addresses to traverse network
    firewalls and gateways


 META-DATA

  WSBPEL
    language for business processes (see WSBPEL)

  WSDL
    language for Web services (see WSDL)

  WSFL
    language for Web services processes (see WSFL)

  WS-Policy
    framework for communicating policy
    requirements and restraints

  WS-PolicyAssertions
    common assertions within a policy

  WS-PolicyAttachment
    associate WS-Policy with WSDL and UDDI

  WS-MetadataExchange (WS-MEX)
    bootstrap communication with a Web service


 SECURITY

  WS-SecurityPolicy
    define policy assertions

   WS-Security
     protection methods for SOAP messages

   WS-Trust
     manage security tokens

   WS-SecureConversation
     define new WS-Security token types
     define how keys are computed


 QUALITY OF SERVICE

   WS-ReliableMessaging (WS-RM)
     ensure message is delivered in case of failure

   WS-Coordination
     framework for coordinating actions in
     WS-Atomic Transactions

   WS-AtomicTransactions
     supports rollback (see two-phase commit)