Creating a viewpoint must follow two steps: select the subset of metamodel concepts needed for the stakeholder concerns, then define a representation that those stakeholders understand, such as a standard or custom diagram, a catalog, a matrix or another visualization. Applying the viewpoint to a model must select the matching architecture parts and present them in the defined representation.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.