GXA
The Global XML Web Services Architecture (GXA) was an announcement[1] by Microsoft in 2002 of several proposals for extensions to SOAP. Some of the components of GXA were developed into standards in combination with other companies, including IBM. Others were specific to Microsoft and have been superseded. Microsoft released a reference implementation of a part of GXA as Web Services Enhancements 1.0 SP1 for Microsoft .NET (WSE).
Components of GXA in WSE 1.0
WS-Security WS-Routing WS-Policy XML Infoset
GXA Future Directions
At the time of the GXA announcement, Microsoft listed further standards they were participating in developing:
Federated security: WS-Trust, WS-Privacy, WS-Federation, WS-SecureConversation, WS-Policy
Pervasive metadata and discovery: WS-Referral
Microsoft also announced they were working on distributed agreement (transaction) standards.
See also
List of Web service specifications
Further reading
GXA (Global XML Architecture) at serviceoriented.org
GXA Defines Framework for Web Services from Directions On Microsoft, Sep 23 2002