Overview of the Project Management Maturity Model.
2.1 The Software Engineering Institute Capability Maturity Model
Beginning as early as 1986 the Software Engineering Institute (SEI), which is affiliated with Carnegie Mellon University, began developing a process maturity framework for software development . With financial support from the Department of Defense this early effort resulted in the publication of the Capability Maturity Model® (CMM®)  in 1991. This is a lengthy foundation chapter in which the detailed description of the five-level maturity model is presented and applied to each of the 39 processes that define the project management body of knowledge...