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| Criterion |  Product Discovery Solution Interview |  Innovation Design Thinking |  Product Strategy Lean Canvas |  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 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. | 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 | High | Medium | High |
Timedifferent | 30-60 min je Interview | 1 Tag bis mehrere Wochen | 45-90 min | 4-5 Tage |
Participantsdifferent | 5-10 Interviews | 4-10 | 1-6 | 5-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Problem Statement, Prototype, Test Learnings | Lean Canvas, Core Assumptions, Experiment Backlog | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | ValidationInterviewsPrototype | InnovationPrototypeResearch | StartupLeanAssumptionsBusiness model | Design sprintPrototypeValidationInnovation |