Start with requirements
The most expensive bug is building the wrong thing
Requirement analysis comes first
Before any code, we map how work actually flows today: who enters what, where it goes, what's copied by hand, where things wait. The requirements that come out of this are the specification the software is built and tested against.
That step also answers the question many owners are afraid to ask: does this need custom software at all? Sometimes an existing product, configured well, is the better answer — and it's cheaper to find that out on paper.

