1. A federation method for a Cloud Client seeking a cloud service from a Cloud, comprising: receiving a request from the Cloud Client to subscribe to a profile federation service, wherein the profile federation service includes at least one of passing of identity information associated with a Cloud Client being applied across multiple Clouds, transmitting multiple copies of an identity customer profile to one or more Cloud providers, and causing to be stored portions of the identity customer profile in parts across the multiple Clouds; authenticating the Cloud Client based at least in part on the request; retrieving at least a portion of a Cloud Client profile associated with the Cloud Client; providing the portion of the Cloud Client profile to facilitate the Cloud Client to access the cloud service of the Cloud; identifying an interface for the Cloud providing the cloud service; comparing the interface to an interface preference associated with the Cloud Client; and transparently mapping the interface to the interface preference.