PRINCE2 is a structured project management method that can be applied to projects regardless of scale, type, organization, geography, or culture. It separates the management aspects of a project from the technical work. Key benefits include ensuring business justification, involving senior management, facilitating controls, providing communication, and allowing projects to be stopped and restarted under management control. PRINCE2 is based on principles like continued business justification and defined roles and responsibilities. It addresses themes like business case, organization, quality, plans, risk, change, and progress through processes like starting up a project, directing a project, and closing a project.