Ari Bixhorn, lead product manager in web services at Microsoft, said the technology would improve the productivity of software developers, allowing applications and integration projects to be coded more quickly.
"With the Indigo security functionality, what formerly took hundreds of lines of code can be implemented in one line," he said.
Microsoft also plans to make Indigo the standard programming model for building applications to replace a raft of interfaces such as ASMX, Enterprise Services, .net Remoting, WSE and System.Messaging.
Microsoft plans to make Indigo compatible with web services running on non-Windows platforms by using the WS specifications from web services standards body Oasis.
Bixhorn said, "We expect Indigo to be the most interoperable framework for building web services."
The Indigo code is available via Microsoft's community technology preview programme prior to the full beta release, which is expected later this year.