During the Closing a Project process in PRINCE2, the ownership of the project's products is formally transferred to the customer, ensuring that all deliverables have been accepted and are ready for operational use. This transfer marks the formal completion of the project. References: PRINCE2 Foundation official study guide and materials.

The Project Initiation Documentation (PID) is the base product against which the Project Board can assess progress, issues, and ongoing viability questions in PRINCE2. The PID includes key documents such as the Business Case, the Project Plan, and risk management information, providing a comprehensive reference for governance decisions throughout the project. References: PRINCE2 Foundation manual, PRINCE2 official resources

In PRINCE2, if the role of project support is not allocated to another person, it is assigned to the project manager. Project support involves assisting with the management of the project by handling administrative tasks, configuration management, and other support functions. References: PRINCE2 Foundation Handbook, Project Support section.

Change management' is defined as the means by which an organization transitions to a desired future state. It involves the processes and techniques used to manage the people side of change to achieve the required business outcome, ensuring that changes are implemented smoothly and effectively.
PRINCE2 7 Foundation materials on project management terms and definitions.

The result of the change derived from using the project's product is referred to as the 'outcome'. An outcome is the effect of the change, typically a new capability that the project's outputs enable within the organization.
This differs from outputs (which are tangible deliverables of the project) and benefits (which are the measurable improvements resulting from an outcome).
= PRINCE2 7 Foundation handbook and online resources