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| Criterion |  Operations Failure Mode and Effects Analysis |  Growth A/B Testing |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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. |
Complexitydifferent | High | High | Low |
Timedifferent | 2-6 h | 1-4 Wochen | 15-30 min |
Participantsdifferent | 3-10 | 1-6 | 2-6 |
Formatdifferent | Workshop | Async | Workshop |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | Experiment results, Decision log, Learning summary | Root cause notes, Countermeasures |
Tagsno overlap | RiskQualityOperationsRoot cause | ExperimentsGrowthAnalyticsValidation | Root causeIncidentLeanProblem solving |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
