Which processes are responsible for the regular review of underpinning contracts?

Supplier Management owns the formal relationship with external suppliers and is directly accountable for managing, reviewing, and renewing underpinning contracts. Service Level Management reviews underpinning contracts to verify they align with and adequately support the service levels committed to in SLAs, making both processes jointly responsible for regular UC reviews.

Change Management is responsible for controlling the lifecycle of changes to IT services and infrastructure; it has no defined role in reviewing supplier underpinning contracts.

Availability Management works to ensure services meet agreed availability targets and may influence supplier requirements, but reviewing and managing underpinning contracts is not within its defined responsibilities.

Availability Management does not have a formal responsibility for reviewing underpinning contracts - that accountability belongs to Supplier Management and Service Level Management.