U.S. government operations can be incredibly complex. The KISS philosophy (“Keep It Simple Stupid”) doesn’t always apply even when those involved want it to, due to numerous laws and regulations.
The chart below, a summary published by the Pentagon’s Defense Acquisitions University, covers the process for purchasing equipment. It serves as a pictorial roadmap of key activities in the systems acquisition processes. It is available here in greater detail (You can click on any box within the chart on that page to zoom in.). The back of the chart is available here. This is version 5.3 of the chart; version 5.4 is available, but is not interactive.