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| Criterion |  Product Discovery Solution Interview |  Product Discovery Test Card |  Product Strategy KPI Tree |  Product Strategy Counter Metrics |
|---|---|---|---|---|
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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When metrics across the organization drift apart, it arranges drivers and effects under one shared logic. It connects customer value, product logic, and decision priorities. The result is captured as a KPI tree and owner list. | When a headline metric could mask side effects, it adds guardrail signals against unwanted outcomes. It connects customer value, product logic, and decision priorities. The result is captured as a counter-metric list and guardrail definitions. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 30-60 min je Interview | 20-35 min | 90-180 min initial, dann laufend | 30-60 min |
Participantsdifferent | 5-10 Interviews | 1-5 | 3-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Test Card with a pre-set threshold | KPI Tree, Owner List | Counter Metric List, Guardrail Definitions |
Tagsno overlap | ValidationInterviewsPrototype | ExperimentsValidationDiscoveryHypothesis | MetricsStrategyAlignmentMeasurement | MetricsMeasurementStrategyExperiments |