Open with the business problem, not your preferred technology. Which people will use this, how many times a day, and what does the process look like without it? An experienced team who grasps the purpose can propose an alternative that costs less; a team that receives only a list of screens can only price your assumptions along with the work.

Describe the scope as short scenarios: who does what, and what happens next. Equally important, state explicitly what you are not building. A written out-of-scope list prevents more argument at delivery time than almost anything else software development company in russia the document. Indicate as well which parts are firm and which may still change — estimators price uncertainty, and pretending everything is fixed helps no one.

List the constraints. This means the platforms and services involved, the data you already hold and its condition, security and compliance rules, user volumes, supported browsers rest or graphql devices and stacks you cannot change. If a deadline is real, say why: an experienced team can often rearrange the plan to protect it, provided they hear about it early.

Define what completion means feature by feature. Testable acceptance criteria do not require any formal notation: a plain-language note stating the expected behaviour will do. This single habit shortens acceptance testing considerably and removes the usual argument at handover.

To close, ask for a specific format. Ask for an itemised estimate, the assumptions behind each number, the main risks and a range rather than a single figure. Treat a wide range as information, not evasion: it usually points to exactly which requirement is unclear. Then clarify that area and ask for a new estimate — the second estimate tends to be the one worth planning around.