1. A system for managing identity and access management (IAM) data comprising: an IAM data model that models at least a portion of an IAM domain space and that provides a common IAM data format; a mapping module configured to transform heterogeneous IAM data provided by a plurality of IAM data sources based on the IAM data model into homogenous IAM data formatted according to the common IAM data format; and a data store that implements the IAM data model such that the data store is configured to store the homogeneous IAM data.