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| Criterion |  Growth North Star Metric |  Product Discovery Learning Card |  Product Discovery Test Card |  Growth Growth Experiment |
|---|---|---|---|---|
Purposedifferent | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When growth ideas surface quickly, the temptation to build immediately instead of learning is high. A Growth Experiment frames an assumption so target group, lever, and measurement are clear before the first deployment. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 1-2 h | 25-40 min | 20-35 min | 1-2 Wochen |
Participantsdifferent | 3-8 | 1-5 | 1-5 | 1-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | North Star metric, Input metric tree, Measurement cadence | Learning Card with evidence and next action | Test Card with a pre-set threshold | Experiment card, Result summary, Next bet |
Tagsno overlap | GrowthMetricsAlignmentRetention | ExperimentsValidationDiscoveryLearning | ExperimentsValidationDiscoveryHypothesis | MarketingGrowthExperimentsLearning |