The third dimension: the organization's relationships with the organizations involved in designing, developing, deploying, delivering, supporting and improving its services, and the contracts and agreements with them, on a spectrum from formal goods supply and service delivery contracts to service partnerships sharing goals and risks; the sourcing strategy follows the organization's goals, culture and environment (strategic focus, corporate culture, resource scarcity, cost, subject matter expertise, external constraints, demand patterns), service integration and management may coordinate the relationships in-house or through a trusted partner, and 'as a service' offerings shift investment from capital to operating expenditure.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.