Which process or function is responsible for monitoring activities and events in the IT infrastructure?

Service level management is concerned with negotiating, agreeing, and reporting on service level targets rather than directly monitoring IT infrastructure events.

IT operations management is an ITIL service operation function that encompasses IT operations control and facilities management. IT operations control specifically performs routine operational tasks including monitoring and management of the IT infrastructure and events. This distinguishes it from reactive or SLA-focused functions by its proactive, continuous watch over infrastructure components.

Capacity management focuses on ensuring the right level of IT resource is available to meet demand, not on monitoring infrastructure events and activities in real time.

Incident management is a reactive process triggered after an incident is detected or reported; it does not perform the underlying infrastructure monitoring itself.