It Project Management Methodologies are a set of principles, processes, and practices used to guide and manage the successful completion of projects. They are used to ensure that projects are completed on time, within budget, and to the required quality standards. These methodologies provide a framework for project teams to follow, helping them to identify and manage risks, plan resources, and track progress. Common methodologies include Agile, Waterfall, and Lean. Agile focuses on rapid delivery of working software, Waterfall emphasizes careful planning and control, and Lean emphasizes continuous improvement. Each methodology has its own advantages and disadvantages, and organizations must choose the one that best fits their needs. Ultimately, the success of any project depends on the ability of the project team to use the chosen methodology effectively.