2010
InfoQ: WS-I closes its doors. What does this mean for WS-*?
So the question remains: has interoperability pretty much been achieved for WS-* through WS-I and the improvements made with the way in which the specifications and standards are developed today, or has the real interoperability challenge moved elsewhere, still to be addressed?
2007
Tackle WS-Security specification interoperability challenges, Part 1: Problem overview and four available workarounds
Most interoperability issues arise not from the base Web services specification (which is quite mature and stable), but rather from the various WS-* Web services extensions, such as WS-Security
1
(2 marks)