FEA is the Federal Enterprise Architecture Business Reference Model. The Business Reference Model will provide OMB and the Agencies with an invaluable tool for improving the business of government from a cross-Agency perspective. Three Business Areas provide a high-level view of the types of operations the Federal Government performs. The three Business Areas decompose into 34 Business Lines (in some cases could be called Internal Functions). These Business Lines describe more specifically the services and products the Government provides to its stakeholders, while the Internal Functions describe the inter and intra Agency back office and suppor activities that enable the Government to operate. There are 134 SubFunctions which form the final level of decomposition within the Federal Enterprise Architecture Business Reference Model and communicate the specific activities that Federal Agencies perform within wach Line of Business and Internal Function.