The organization should review the contract regularly during its life and at completion so lessons are shared and improvement follows, capturing them in a debrief document for the next sourcing strategy: the sustainability risks that occurred and how they were managed, achievement of the contract's sustainability objectives and targets, a summary of how the contract performed, an analysis of the main success factors and the lessons for future contracts; each new strategy should draw on the previous one, lessons summarised periodically to review the strategy, and published where possible so others can learn.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.