Open with the reason this public sector software solution development should exist, not get a project quote feature list. Who will use the system, how many times a day, and how is the job done today? An estimator who grasps the purpose often proposes a simpler way to reach it; a team that receives only the requirements as given will price exactly what you asked for.

Set out the scope as short scenarios: what the user does and what the system does in response. Just as important, list what the first release deliberately excludes. A written out-of-scope list prevents more disagreement during acceptance than any other single page. Indicate as well which parts are firm and which are still under discussion — honest teams price those differently, and hiding it only hurts you.

List the constraints. These include the platforms and aws consulting services involved, the data you already hold and its condition, regulatory obligations, traffic expectations, target platforms and stacks you cannot change. If there is a hard date, say what depends on it: a team will often cut the right scope to protect it, but not if the date is a secret.

Define what the word done means for each item. Acceptance criteria need not use any formal notation: a plain-language note stating the expected behaviour is enough. This single habit shortens the sign-off process by a surprising margin and removes the most common source of disputes.

One last thing, say what you expect back. Require a task-level breakdown, a written list of assumptions, the main risks and a low number and a high number. Take a broad range as useful information rather than evasion: it usually points to exactly which requirement is unclear. From there tighten that section and ask for .net development outsourcing a new estimate — the revised figure tends to be the one worth planning around.