Project Scope Management is crucial for project success. It involves defining and controlling all work required to complete a project, preventing scope creep, and ensuring stakeholder alignment. Effective scope management helps avoid delays, cost overruns, and dissatisfaction. Key concepts include the project scope statement, Work Breakdown Structure (WBS), and change control processes. Techniques like interviews, focus groups, and prototyping help define scope. Creating a detailed WBS and implementing robust scope control measures are essential for project success.