The Web Services Invocation Framework (WSIF) can provide runtime support for Web services, and for WSDL extensions and bindings, that were not known at build time.
WSIF supports WSDL extensions and bindings that were not known at build time through the use of providers. The providers support Web services that were not known at build time by using the WSDL description to access the target service.
Related concepts
WSIF architecture
WSIF and Web services that offer multiple bindings
WSIF and WSDL
WSIF usage scenarios
WSIF: Overview