SCIM (Simple Cloud Identity Management) is one of the most popular standards in IAM these days. I shall replace SPML (Simple Provisioning Markup Language), building on a REST-based API. However the question remains whether it is more about porting the type of API or really a breakthrough for provisioning to the cloud. And the question remains whether it really will become adopted as a mainstream approach. Besides this, any good standard supports all of IT, not only the cloud. So what does SCIM provide for the on-premise IT?