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| Criterion |  Innovation Lean Startup |  Agile 4Ls Retrospective |  Product Discovery Smoke Test |  Growth Growth Experiment |
|---|---|---|---|---|
Purposedifferent | 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. | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | When growth ideas surface quickly, the temptation to build immediately instead of learning is high. A Growth Experiment frames an assumption so target group, lever, and measurement are clear before the first deployment. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | Wochen bis Monate je Lernzyklus | 45–75 min | 1-5 Tage | 1-2 Wochen |
Participantsdifferent | 2-8 | Team members involved | Nutzertraffic | 1-6 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | 4Ls Board, Learning Themes, Improvement Actions | Interest Metrics, Conversion Signal, Learning Note | Experiment card, Result summary, Next bet |
Tagsno overlap | LeanStartupValidationMVP | RetrospectiveLearningReflectionTeam | ValidationExperimentsDemandGrowth | MarketingGrowthExperimentsLearning |