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| Criterion |  Product Discovery Problem Interview |  Product Discovery Solution Interview |  Business Strategy Business Model Stress Test |  Business Strategy Value Chain Analysis |
|---|---|---|---|---|
Purposedifferent | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | 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. | A Business Model Stress Test checks how well a business model holds up under pressure and headwinds. It compares strengths, risks, market logic, and courses of action. The result is captured as a stress-test report and action plan per scenario. | Value Chain Analysis shows where value is created, costs accrue, and differentiation becomes possible along the process. It compares strengths, risks, market logic, and courses of action. The result is captured as a value-chain map and lever list. |
Complexitydifferent | Medium | Medium | High | High |
Timedifferent | 30-60 min je Interview | 30-60 min je Interview | Half day | Half day |
Participantsdifferent | 5-12 Interviews | 5-10 Interviews | 3-8 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Solution Feedback, Objection List, Validation Notes | Stress Test Report, Action Plan per Scenario | Value Chain Map, Lever List |
Tagsno overlap | DiscoveryInterviewsValidation | ValidationInterviewsPrototype | StrategyBusiness modelRiskDiagnosis | StrategyBusiness modelDiagnosisAnalysis |