Summary
The PPDIOO lifecycle is a valuable tool that can be used in a variety of different situations. As with any process, it does require a certain amount of training to ensure that everyone involved is aware of how the approach works. The cost of this training is, however, minimal compared with the advantages that a company gets from following an optimized process. Take a look through the references for a more detailed explanation of the various phases; there are also a number of different case studies that have been made available by Cisco on their web site.