Ray Wagner of Gartner published a note on SAML 2.0 yesterday in which he calls for vendors (I think he means Identity and Access Management vendors) to more organically support SAML.
...all major vendors must support both SAML token formats and SAML
protocols organically within their products. This certainly is not yet
the case for most of the leading vendors, and not even the vendors that
have developed SAML use it within the federation features of their own
products. If those vendors did so, major platform vendors would have a
much stronger incentive to focus on full SAML support.
He has a point, in project after project we are seeing a broad diversity in what it means when a given vendor product claims to "support" SAML - and the delta between what is supported at the press release level and what is supported at the product level seems to be particularly large when it comes to SAML.
The underlying context for Ray's view is that the major Identity and Access Management vendors are, by and large, highly ambivalent about SAML. This is to be expected. All of the IAM vendors develop products that have proprietary functionality that does exactlty what SAML does - and they are driven to extend their customer's dependence on their own proprietary solutions. The major vendors also have limited engineering resources to allocate across broad product lines and tend to have limited expertise in SAML. The net result is the market condition Ray identified in his note.
In the meantime, enterprise customers continue to recognize/understand/feel the pain of proprietary approaches and increasingly demand the long term business value of open standards, interoperability, and vendor independence.
So the question is, what will occur first? Will the major vendors change course and commit significant resources to developing organic support for SAML (and, importantly, to bringing SAML solutions to market in their established sales channels) or will SAML disrupt the major IAM vendors and usher in a new standards based architecture for digital identity.
It is early days, but my bet is on disruption.