"In my opinion, all phases of the SLDC are important. For example, defining user requirements is one of the key elements to successful testing and evaluation, to which the analysis and planning phases are critical. In the same vein, if the sample framework is flawed from the design phase, you may only determine the flaws during deployment to a larger group. I'm a big fan of following a well-defined cycle because it helps provides a clear view of the system implementation or improvement project needs, such as the project team, staffing, cost, and timing."
