Centrify's Tom Cromelin could hardly kept his excitement down (well, he's a marketing guy -- they get excited when the logo gets a new color) when he wanted to tell me about the new release of Centrify Express 2011. To get the full flavor, let me give it to you in his words:
"Here's the context:

"People are excited about the benefits of cloud computing because it is dynamic: Compute capacity can scale enormously to support the growing demands of the IT organization (and shrink just as fast). HOWEVER [his emphasis], in order to manage these cloud-based systems, the security infrastructure must also be automated to keep up with the changes and to allow critical security and compliance policies to be applied consistently as every new system is initialized (and terminated) within a hosted environment.