Start with the business problem, not your preferred technology. Which people will use the system, with what frequency, and what does the process look like without it? A vendor who knows what you are trying to achieve can propose a cheaper route to it; someone handed only a feature list can only price your assumptions along with the work.

Set out the scope as user stories or scenarios: who does what, hire remote angular developers and what happens next. Equally important, list what is out of scope. An explicit list of exclusions saves more disagreement during acceptance than almost anything else in the document. Mark too which items are decided and which are still under discussion — the difference changes the price, and concealing the open questions only hurts you.

Set out your constraints. The list covers systems you must integrate with, the data you have and where it lives, web application development for edtech compliance requirements, traffic expectations, which devices matter and software outsourcing guide infrastructure that is already decided. Where a date is genuinely fixed, explain what drives it: a good team is usually able to rearrange the plan to hit it, but not if the date is a secret.

Say what done means feature by feature. Acceptance criteria do not require formal language: a short paragraph stating what must be true when the feature works is sufficient. This single habit shortens acceptance testing dramatically and eliminates the usual argument at handover.

Finally, say what you expect back. Ask for a breakdown by feature or module, a written list of assumptions, the risks the team sees and a range rather than a single figure. Take a broad range as information, not evasion: it normally identifies exactly which requirement is unclear. Then tighten that section and ask again — the next version will be much more reliable.