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| Criterion |  Operations Bottleneck Analysis |  Operations 8D Problem Solving |  Operations Theory of Constraints |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | For a flow that backs up at one point, the method looks for the capacity limit with the greatest leverage. It explains why extra effort elsewhere barely improves throughput. | 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 system that does not get faster despite effort, the method directs attention to the bottleneck. It concentrates improvement on the point that actually limits throughput. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Medium | High | High | Medium |
Timedifferent | 1-3 h | 1-6 Wochen | 2-4 h Analyse, laufend | 1-4 h |
Participantsdifferent | 3-8 | 4-10 | 3-12 | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Bottleneck Map, Flow Metrics, Improvement Options, Follow-up Measures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Constraint Map, Improvement Plan, Flow Metrics | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | FlowMeasurementConstraints | QualityProblem solvingRoot cause | OperationsConstraintsFlowImprovement | Root causeProblem solvingQualityIncident |