A transition plan is a document that outlines how the project deliverables will be transferred to the operations team or the end users, and how the project team will disengage from the project. It typically includes details such as operational training, go-live date, support arrangements, roles and responsibilities, and acceptance criteria. A transition plan is different from a project closeout report, which summarizes the project performance, lessons learned, and final status. A handover to operations is a process of transferring the project deliverables to the operations team, but it is not a document. A phase-gate review documentation is a set of documents that are used to evaluate the project progress and readiness to move to the next phase, but it is not related to the operational handoff. Reference = CompTIA Project+ PK0-005 Certification Study Guide, Chapter 14: Closing the Project, p. 409-410; [CompTIA Project+ Certification Exam Objectives], Domain 4: Project Closure, Objective 4.1: Compare and contrast various project closure activities.