Service Acceptance criteria are used to?

SAC inform and validate outputs of the design stage but are not themselves a mechanism for ensuring the design stage exists or occurs.

Portfolio Management governs the full investment portfolio of services and programs; SAC play no role in ensuring this practice is in place.

SAC are established during service design and used in service transition to verify that agreed conditions are met before a service goes live, ensuring both that the service can be delivered to specification and that the necessary support structures are in place. They act as a gateway between development and operation, validating readiness for ongoing delivery and support rather than just initial deployment.

KPI reporting is an ongoing operational and CSI activity managed through service reporting processes, which is separate from the acceptance-gate function of SAC.