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| Criterion |  Operations PDCA Cycle |  Operations Visual Management |  Operations Failure Mode and Effects Analysis |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | For an improvement that still has to prove itself in everyday work, the method runs it through small learning loops. It connects planning, checking, and standardization into a repeatable learning mode. | With high tempo and many parallel topics, the method makes status, deviations, and priorities visible at a glance. It reduces search effort and prevents what matters from getting lost in daily work. | 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. | 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 | Low | Low | High | Low |
Timedifferent | 1 h bis mehrere Wochen | Ongoing | 2-6 h | 15-30 min |
Participantsdifferent | 1-8 | 1-20 | 3-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Visual Board, Status Indicators, Exception Cues | FMEA Table, Risk Priority, Mitigation Actions | Root cause notes, Countermeasures |
Tagsno overlap | Continuous improvementLeanExperiments | SignalsOperationsVisual management | RiskQualityOperationsRoot cause | Root causeIncidentLeanProblem solving |