The traditional linear model is one the easiest project management techniques to use, and projects are set up in five step-by-step stages. Another technique involving five simple steps is the define, measure, analyze, improve and control method, abbreviated as DMAIC. The rapid application development method emphasizes speed and includes customer input. The waterfall technique is a slower, deliberate project management method that follows a simple linear structure, and each step flows downward towards project conclusion.
Traditional project management starts with step one, which is the initiation phase of the project. Specific details of the project are worked out in step two, which is the planning and design phase. In step three, the project is executed. The project is monitored and controlled during step four, and if improvements are needed, it goes back to either step two or three. After problems are eliminated, the project moves into its final closing stage.
Projects using the DMAIC technique must first define how the project meets customers expectations. Measurements of project defects are assessed and analyzed to determine when and where defects occur. The final two states of DMAIC involve figuring out how to fix problems and maintaining improvements. The RAD method quickly moves through stages of planning, design, development, customer testing and review.