Which of the following are included within Release and Deployment Models? (1) Roles and responsibilities (2) Template release and deployment (3) Supporting systems, tools and procedures. (4) Handover

Excluding item 4 (handover activities and responsibilities) is incorrect because formal handover steps and ownership transfer are explicitly part of Release and Deployment Models in ITIL Service Transition.

Excluding item 1 (roles and responsibilities) is incorrect because defining who is accountable for each step is a fundamental structural requirement of any ITIL Release and Deployment Model.

ITIL defines Release and Deployment Models as encompassing roles and responsibilities, template release and deployment plans, supporting systems, tools and procedures, and handover activities and responsibilities. All four components are required to ensure releases are planned, executed, and handed over consistently and with clear accountability. Omitting any element would leave gaps in governance or operational readiness.

Selecting only items 1 and 4 omits both the template release plans and the supporting tools and procedures, which are core components required for a standardized deployment approach.