Governance covers the strategic activities that control architecture against enterprise direction: establishing the governance capability, setting the desired outcomes for the portfolio, checking that roadmaps stay coherent with those outcomes, directing the portfolio and its activities, monitoring compliance with the directions, and deciding and iterating on corrective action. Each activity is governed by principles, and a design authority outside the architect team should check that the activities follow them.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.