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| Criterion |  Product Discovery Solution Interview |  Growth North Star Metric |  Product Discovery Assumption Mapping |
|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | When product teams track many metrics, the view of the actual customer outcome easily gets lost. A North Star Metric bundles growth, usage, and value contribution into one signal that makes the system's direction visible. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 30-60 min je Interview | 1-2 h | 45-60 min |
Participantsdifferent | 5-10 Interviews | 3-8 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | North Star metric, Input metric tree, Measurement cadence | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | ValidationInterviewsPrototype | GrowthMetricsAlignmentRetention | AssumptionsRiskExperimentsValidation |
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