Which stakeholder approves a project ' s result?

According to the PMBOK® Guide (Project Management Body of Knowledge), specifically within the Validate Scope process and the Project Stakeholder Management knowledge area, it is crucial to identify which stakeholder provides the formal acceptance of the finished deliverables.

Customer (Option A): The customer is the individual or organization that will use the project ' s product, service, or result. In the Validate Scope process, the Customer (or the User) is responsible for reviewing the verified deliverables to ensure they meet the requirements and providing formal written acceptance. Without this approval, the project cannot officially move into the Close Project or Phase process.

Sponsor (Option B): The sponsor provides the financial resources and " charters " the project. While the sponsor may sign off on the Project Charter and the final Project Report, the technical and functional " approval of the result " (the deliverables) is primarily the responsibility of the customer who will utilize them.

Seller (Option C): In a procurement context, the seller is the provider of the product or service. They seek approval from the buyer; they do not approve the final result themselves.

Functional Manager (Option D): A functional manager has management authority over an organizational unit (like HR or Engineering). While they may provide resources to the project, they generally do not have the authority to approve the final project results unless they are also acting as the customer.

In the PMI framework, the distinction between the Sponsor (who pays) and the Customer (who accepts/uses) is vital. Validate Scope is specifically concerned with the Customer’s formal acceptance of the completed project deliverables.