Open with the problem you are solving, not your preferred technology. Which people will use this, how many times a day, and what does the process look like without it? An estimator who knows what you are trying to achieve will suggest an alternative that costs less; a team that receives only the requirements as given will price exactly what you asked for.

Describe the scope as concrete flows: what the user does and what the system does aso company in usa response. Every bit as useful, list what the first release deliberately excludes. An explicit exclusion list removes more friction during acceptance than the rest of the brief combined. Indicate as well which items are decided and mvp software development which are still under discussion — estimators price uncertainty, and hiding it helps no one.

Write down the hard constraints. The list covers systems you must integrate with, existing databases and their quality, security and compliance rules, user volumes, supported browsers or devices and stacks you cannot change. Where a date is genuinely fixed, say why: an experienced team will often resequence the work to meet it, but only if they know it exists.

Write down what done means feature by feature. Testable acceptance criteria do not require special syntax: a short paragraph stating what a user should be able to do will do. This one section compresses acceptance testing dramatically and eliminates most late-stage disagreement.

To close, ask for a specific format. Ask for an itemised estimate, a written list of assumptions, whatever the team considers risky and a range rather than a single figure. Treat a wide range as useful information rather than evasion: it tells you exactly which requirement is unclear. At that point clarify that area and ask for a new estimate — the next version is far closer to reality.