Acceptance Criteria : A set of conditions that is required to be met before deliverables are accepted.
Deliverable : Any unique and verifiable product, result, or capability to perform a service that is required to be produced to complete a process, phase, or project.
Approval : The act of officially accpeting an idea, action, or plan.
Assurance : To give a strong and/or definite statement that something will happen or that something is true; to give confidence to.
Closeout :