I placed this title, Data Flow Diagram (DFD), at the beginning for a reason; because it's my favorite section and I use it as a reference in the ATM document. The DFD will allow us to gain a better understanding of the application by providing a visual representation of the different pieces of the web application. The focus of the DFD is on how data moves through the application from the user until it reaches its final destination (for example, a database or filesystem). Generally, I use the architecture document that you already received during the Architecture phase, from the project team, to develop the DFD (the architecture document should contain the architecture diagram of the application):
As you can see from the ...
