The programme or project manager selects a interface management process that the Engineering Technical Authority has approved and puts it into practice: its activities, requirements, guidelines and documentation are tailored and customised for managing the interfaces that the system design processes define and generate. Formal interface management is used to help control development split between Government programmes, contractors and dispersed technical teams, and to keep the interface definitions, and compliance with them, consistent across the system's end products and enabling products.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.