This document discusses the Government Sponsored Enterprises (GSEs) and their regulator, the Federal Housing Finance Agency (FHFA). It also describes the Uniform Mortgage Data Program (UMDP) and its components, which were established to standardize mortgage data collection and reporting across the mortgage industry, from loan application through acquisition by the GSEs. The UMDP includes the Uniform Appraisal Dataset (UAD), Uniform Loan Delivery Dataset (ULDD), and Uniform Closing Dataset (UCD) standards.