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| Criterion |  Operations 8D Problem Solving |  Operations Barrier Analysis |  Product Strategy OKRs |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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 strategic direction needs to become measurable, it connects ambition with checkable results. It makes goals connectable to focus and review. | 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 | Medium | Medium | Low |
Timedifferent | 1-6 Wochen | 2-4 h | 1-2 h Setup | 15-30 min |
Participantsdifferent | 4-10 | 2-6 | 2-20 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | OKR set, Measurement plan, Review cadence | Root cause notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | Root causeSafetyIncident | GoalsAlignmentOutcomesMeasurement | Root causeIncidentLeanProblem solving |