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| Criterion |  Product Discovery Solution Interview |  Innovation Lean Startup |  Innovation Design Thinking |  Product Strategy Lean Canvas |
|---|---|---|---|---|
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. | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 30-60 min je Interview | Wochen bis Monate je Lernzyklus | 1 Tag bis mehrere Wochen | 45-90 min |
Participantsdifferent | 5-10 Interviews | 2-8 | 4-10 | 1-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Problem Statement, Prototype, Test Learnings | Lean Canvas, Core Assumptions, Experiment Backlog |
Tagsno overlap | ValidationInterviewsPrototype | LeanStartupValidationMVP | InnovationPrototypeResearch | StartupLeanAssumptionsBusiness model |