Net-Centric Enterprise Solutions for Interoperability (NESI) is a Cross-Service effort between Air Force (ESC), Navy (PEO C4I), and Defense Information Systems Agency (DISA). NESI provides, for all phases of the acquisition of net-centric solutions, actionable guidance that meets DoD Network-Centric Warfare goals. The guidance in NESI is derived from the higher level, more abstract concepts provided in various directives, policies and mandates such as the Net-Centric Operations and Warfare Reference Model (NCOW RM) and the ASD(NII) Net-Centric Checklist. As currently structured, NESI guidance is captured in documents covering architecture, design and implementation; a compliance checklist; and a collaboration environment (DoD PKI required) that includes a reuse repository and collaboration tools.