A project plan is a written document that is used to guide both project plan and project execution. It is the most important document that requires to be created when starting any business project and it is the key to a successful project. It is a practice that is stating how to do something and how to be achieved within a certain period of time with assigned resources. A detailed project plan is a solid reason behind the every successful result and it may be summarized. The main function of project plan is to define the approach to be used by the project team to deliver the intended project management scope of the project.
Generally it is a plan between the project procurer and developer and the document also ensures mutual project stakeholders approval while assisting management team. The basic uses of project plan are to document planning assumptions, decisions, facilitate communication among the stakeholders, approved document scope, schedule baselines and control the cost of a project. Basically with the help of this document you can easily track the progress of a project and plans help to show you end goal. You can also use a project plan to check your estimates and help you to carry out a post implementation review.