Can you explain the difference between the Scope Management Plan and the Project Management Plan?

Answer 1

The Project Management Plan tells you how to manage all of the different knowledge areas, and it has baselines for the scope, schedule and budget.

The Scope Management Plan is one of the subsidiary plans inside the project management plan. It has really specific procedures for managing scope. For example, it tells us which stakeholders we need to talk to when gathering requirements. It lists what tools and techniques we are planning to use when we use the Scope Definition to define the scope. And when there's an inevitable change because even the best project manager can't prevent every change, it gives him procedures for doing Scope Management. So even though the Scope Management Plan is created in the Develop Project Management Plan process, it's used throughout all of the Scope Management processes.