I would like to make everyone aware of the two brand new whitepapers that I and Tom Shinder just published on the TechNet Wiki:

The first paper covers the fundamental pillars of identity as defined by the Microsoft solution architects, that can be useful in creating a strategic direction for an identity infrastructure in your organization.

The second paper covers identity infrastructure capabilities specific to both on-premises and cloud computing that we at Microsoft are most often asked by our customers to implement. This paper also contains introductory information on the existing Microsoft solutions that can help you obtain these popular identity infrastructure capabilities.