How to Write a Technical Brief That Earns a Reliable Estimate > 공지사항

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Open with the problem you are solving, not your preferred technology. Which people will use this, how many times a day, and what happens today? An experienced team who understands the goal often proposes a cheaper route to it; one who only sees the requirements as given can only price the list as written.

Set out the scope 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 any other single page. Mark too which items are decided and which are still open — honest teams price those differently, langchain and rag difference hiding it only hurts you.

Set out your constraints. This means existing systems the software development cost has to talk to, the data you have and where it lives, compliance requirements, traffic expectations, which devices matter and stacks you cannot change. If there is a hard date, explain what drives it: an experienced team is usually able to rearrange the plan to protect it, but not if the date is a secret.

Say what the word done means feature by feature. Acceptance criteria need not use any formal notation: a short paragraph describing what must be true when the feature works is sufficient. This one section compresses acceptance testing dramatically and eliminates the usual argument at handover.

Finally, ask for a specific format. Request an itemised estimate, a written list of assumptions, typescript frameworks whatever the team considers risky and an optimistic and a pessimistic figure. Treat a wide range as information, not evasion: it usually points to where your description is thin. At that point rewrite that part and request a revised number — the second estimate is far closer to reality.