Next, confirm the project is complete. It’s not enough to declare a project complete by yourself. Each person involved needs to agree on the project’s completion before you can formally close it out and move on.
To confirm the project’s completion, you will need to obtain approvals for the project deliverables (i.e. all stakeholders must agree that you delivered on all parts of the project plan) usually larger projects will require official sign-off from all the project stakeholders. Be sure to document this step so you have proof that the project close was formally signed off.
A sign off meeting can be held to bring stakeholders together.