Enabling Identity Data Services: New Developments in Identity Tooling Provide a Good Start
You can find it under: Identity and Privacy Strategies
The article touches on many of the same concepts that I've been grappling with lately related to identity data services. They discuss the value of an identity interface layer. The concepts they present are more advanced than what I've been talking about, but I think they're based on the same underlying business drivers, which is encouraging. It's good validation. And I learned a few new things. It's well worth the read if you have a Burton account. Go check it out.