One of the most compelling promises of the cloud is that you can pull out a credit card and be working in minutes. No purchase orders tofill out, no equipment to wait for on the loading dock. Just instant access to the resources you need, when you need them. But accessibility comes at a price, and an unintentional consequence may be that you create yet another orphaned identity silo. Enterprise IT has spent years consolidating its mishmash of directories, only to discover that cloud now threatens to turn back their hard-won victories.