The addition, modification or removal of an authorized, planned or supported service or service component and its associated documentation is a definition of what?

In ITIL, a 'change' is formally defined as the addition, modification, or removal of an authorized, planned, or supported service or service component and its associated documentation. This definition distinguishes a change from the mechanisms used to propose or govern it, such as a change request or a change advisory board.

A change model is a repeatable, pre-defined approach for handling a particular category of change, not the definition of a change itself.

A change request is the formal proposal or record used to initiate a change, not the definition of what a change is.

A change advisory board (CAB) is a group that advises change management on the approval and prioritization of changes, not a definition of a change.