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| Criterion |  Product Discovery Solution Interview |  Innovation Lean Startup |  Architecture Architecture Decision Record |  Innovation Design Sprint |
|---|---|---|---|---|
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. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | When the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 30-60 min je Interview | Wochen bis Monate je Lernzyklus | 15-45 min | 4-5 Tage |
Participantsdifferent | 5-10 Interviews | 2-8 | 1-3 | 5-8 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | ADR File, Decision Log, Rationale | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | ValidationInterviewsPrototype | LeanStartupValidationMVP | ArchitectureRationaleDocumentationGovernance | Design sprintPrototypeValidationInnovation |