There are three model types identified by (Wysocki 2012) which control the five Project Management Life Cycle. Only 20 percent of the projects falls under the Traditional Project Management (TPM) approach, where the Linear Project Management Life Cycle Model and Incremental Project Management Life Cycle Model applies. The other 80 percent of the projects falls under the Agile Project Management (APM) Approaches, where the Iterative Project Management Life Cycle Model and Adaptive Project Management Life Cycle Model applies. In addition to, Extreme Project Management Approach (xPM), where The Extreme Model applies.
