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| Criterion |  Operations Barrier Analysis |  Growth A/B Testing |  Operations 5 Whys |  Product Discovery Smoke Test |
|---|---|---|---|---|
Purposedifferent | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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. |
Complexitydifferent | Medium | High | Low | Low |
Timedifferent | 2-4 h | 1-4 Wochen | 15-30 min | 1-5 Tage |
Participantsdifferent | 2-6 | 1-6 | 2-6 | Nutzertraffic |
Formatdifferent | Workshop + async | Async | Workshop | Async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Experiment results, Decision log, Learning summary | Root cause notes, Countermeasures | Interest Metrics, Conversion Signal, Learning Note |
Tagsno overlap | Root causeSafetyIncident | ExperimentsGrowthAnalyticsValidation | Root causeIncidentLeanProblem solving | ValidationExperimentsDemandGrowth |