Linear Versus Incremental Pmlc Models

Linear Versus Incremental PMLC Models

In this paper, we will attempt to compare and contrast the Linear and Incremental PMLC. They are both part of the project management life cycle and follow the Traditional Project Management approach. The Linear Project Management Life Cycle model is one of the more basic models in the mix. It deals with the idea that the five process groups are completed in order sequentially. According to Wysocki, "The Linear PMLC model is change intolerant." (Wysocki, 2011)

The Linear PMLC consists of five process groups in the following order: Scope, Planning, Launching, Monitoring, Controlling, and Closing. Each process must be completed before the next process can begin. In addition, in order to complete the process, the closing phase has to be completed.

An example where the Linear PMLC would be used is during the installation of a network in a field office. Since this is an infrastructure project, the linear model has better chances of succeeding. This type of project always works best with projects that have the following:

* Complete and clearly defined goal, solution, requirements, functions and features.

* Few expected scope change requests.

* Routine and repetitive activities.

* Use of established templates.

(p.342, Wysocki, 2011)

The Incremental approach is similar to the linear approach due to it to being a form of Traditional Project Management. However, it releases the solution as they are completed. This process is designed develop a system through repeated cycles at by small parts at a time (thus being named incremental). There are differences between the two models. The first difference, that we are already mentioned, the incremental approach releases solutions to the goals or objectives as they are completed. While the linear approach does expect any scope changes during the process, the incremental approach actually encourages scope changes during the process.

An example of the incremental approach would be the management of a construction project. Certain phases of a large construction project could be rolled out in increments. This works for this type of project because it has the following:

* The same characteristics as the Linear PMLC model

* A need to release deliverables against a more aggressive schedule

(p.356, Wysocki, 2011)

When broken down, the Linear PMLC assumes that you have all the information needed to complete the project. Any deviations to the plan can cause major issues in project schedule. The Linear PMLC is best suited when it has specified and well defined goals and requirements,