The concept of the project management system refers explicitly and specifically to a tool that is used by the project management team in sum total of the means to coordinate the entirety of the project management process. Specifically speaking the project management system is the total aggregation of the tools and techniques along with the procedures, processes, and methodologies that are used for the purposes of completing management of the said project. The system is entirely documented within the context of the project management plan and it will vary depending on the area of application, any preexisting organizational influence, and availability of any particular existing systems. This project management system can be formal or informal and is of particular assistance in helping the project manager complete the project. The project management system in general is the set of processes as well as control functions and related monitoring that can be grouped together into a unified whole.
This term is defined in the 3rd and the 4th edition of the PMBOK.