Remember Web Services? That's what we called SAAS before we knew any better.
Remember when it was hard to get one Web-based app to talk to another securely? So glad that problem is all solved.
WS-I, the vendor consortium dominated by Microsoft, Intel, IBM, HP, SAP, Software AG and the like, and which was dedicated to getting Web services talking securely through the intelligent use of SOAP and SAML is hanging up its shovel. It has fulfilled its charter to create a basic security profile for WS-I interaction, and is closing itself down.
(This is the page with the announcement, but the Nov. 10 link goes to a PDF, so fair warning. Interesting they didn't find a more interactive way to link out their death notice.)