Contracts relating to an outsourced Data Centre would be managed by?

Service Desk is the single point of contact for users handling incidents and service requests, not responsible for managing third-party facility or data center contracts.

IT Operations Control manages routine day-to-day operational tasks and control room functions, not contractual relationships with outsourced data center providers.

Technical Management provides technical expertise and manages technical teams and resources, not the contractual or physical facility arrangements for outsourced data centers.

Facilities Management is the ITIL function that manages the physical environment in which IT infrastructure operates, including oversight of third-party outsourced data center contracts and agreements with external facility providers. This function covers buildings, power, cooling, and related vendor arrangements that are not purely technical in nature.