What a Discovery actually produces
Discovery is the one stage most vendors skip and then pay for later. It is paid, time-boxed, and it ends with a package of artefacts rather than a proposal.
The artefact package
- Summary presentation — background, stakeholder map, requirements overview.
- Requirements — PRD and/or user stories.
- Architecture diagram plus a high-level plan and WBS.
- UX artefacts — core user flows and key screens.
- Budget as a min–max range, with a commitment not to exceed the top of the range.
- Communication schedule.
- Explicit handover list — what is transferred at each later stage.
You keep the artefacts either way — free to build with any team.
Nobody can give a defensible estimate on a non-trivial project without discovery; an estimate without it is a red flag about the vendor, not a favour.
For larger products, Discovery is scoped individually at the intro call.