Article 8 governs how Article 6 + Article 7 obligations may be specified by the Commission. The gatekeeper publishes its compliance approach in a non-confidential summary (Article 8(2)); the Commission may open a dialogue, may specify the measures required, may demand changes. The Article 8 specification process is collaborative but binding on the gatekeeper.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.