Begin with the reason this software should exist, not a feature list. Which people will use this, how often, and what does the process look like without it? An experienced team who grasps the purpose can propose an alternative that costs less; someone handed only a feature list prices the list as written.
Define what is included as short scenarios: who does what, and what happens next. Equally important, write down what the first release deliberately excludes. An explicit exclusion list saves more friction later than almost anything else ai in software outsourcing the document. Also mark which parts are firm and which are still under discussion — honest teams price those differently, and pretending everything is fixed helps no one.
List the constraints. The list covers existing systems the software has to talk to, the data you already hold and its condition, regulatory obligations, expected load, which devices matter and stacks you cannot change. If there is a hard date, laravel vs django comparison say why: a team will often resequence the work to protect it, provided they hear about it early.
Define what done means for each item. Testable acceptance criteria do not need special syntax: a plain-language note setting out what must be true when the feature works will do. That one addition compresses the sign-off process dramatically and eliminates most late-stage disagreement.
One last thing, ask for a specific format. Request a breakdown by feature or module, the assumptions used, the risks the team sees and a low number and a high number. Read a wide range as useful information rather than evasion: it usually points to exactly which requirement is unclear. Then clarify that area and ask again — the revised figure is the one worth planning around.
