The general structure of projects is shown in Figure 5.1. There is a complex interaction between the project development processes such as feasibility study and analyzing requirements and the project management processes.
Figure 5.1. Generic project model
Of course, the development of projects, especially eXtreme projects, is rarely as simple and as sequential as shown in Figure 4.3. What is more important is to understand that, whatever model of development you use, the project management process is ongoing throughout the project development process and after, in product support.