A few years ago, along with our partners, we presented to the World a roadmapfor building a secure web services infrastructure that could be used toenable a large number of applications over the Web. The first standardin the pack was WS-Security which enabled secure message exchangesusing a variety of existing security technologies. This was followed byspecs such as WS-Trust and WS-Secure conversation which built onWS-Security to enable the exchange and brokering of securitycredentials and the creation of long running secure exchanges. Thefinal part of the roadmap was WS-federation which describes how to usethe security roadmap to enable secure, federated environments over theWeb.
My congratulations to the chairs of the group, Mike McIntosh from IBMand Chris Kaler from Microsoft and to all of the folks involved in the creation and standardization ofthe spec.
You can read the formal OASIS announcement for more details.
WS-Federation is an OASIS Standard