Application-Capability Reference Model (ARM)
The Application-Capability Reference Model or Application Reference Model (ARM) is a business-driven, functional framework that supports Federal agencies. It classifies application capabilities with respect to how they support business and/or performance objectives. The ARM is envisioned being structured across horizontal service areas that, independent of the business functions, can provide a leveragable foundation for reuse of applications, application capabilities, components, and business service. The model aids in recommending applications to support the reuse of business components and services across the Federal Government. 
The Application Reference Model (ARM) supports architectural analysis and reporting in the applications sub-architecture view of the overall EA. The ARM is a component-driven taxonomy that categorizes the system and application related standards and technologies that support and enable the delivery of service components and capabilities. It also unifies existing agency application portfolios and guidance on standard desktop configurations by providing a foundation to advance the reuse and standardization of technology and service components from a Federal Government perspective. Aligning agency capital investments to the ARM leverages a common, standardized vocabulary, allowing inter-agency discovery, collaboration, and interoperability. Agencies and the Federal Government will benefit from economies of scale by identifying and reusing the best solutions and technologies for applications that are developed/provided or subscribed to support their business functions, mission, and target architecture.
source: The EA Pad