A systems, software, hardware or requirements engineer, business analyst or architect brings understanding of existing systems, possible new capabilities and the operating context including legacy systems the new one must work with. The role listens to stakeholders and colleagues so as to understand their concerns and the possible solutions instead of jumping to the first technical answer available; writes the system and software requirements through which age appropriate design becomes possible; weighs alternatives and trade-offs for fit with the operating context and long-term strategy without letting go of its commitment to design that is age appropriate and to children's best interests; and tunes technical solutions so that age appropriate values hold their own among the other system requirements.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.