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| Criterion |  Operations Waste Analysis |  Operations 8D Problem Solving |  Delivery Value Stream Mapping |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | For a process that keeps people busy but creates little value, the method exposes waste. It directs attention to unnecessary movement, waiting times, rework, and overdelivery. | 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. | When delivery work dissolves into wait times, handoffs, and hidden effort, Value Stream Mapping makes the actual flow visible. The method exposes bottlenecks, idle time, and feedback loops so lead time and improvement levers become tangible. | 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 | High | Medium | Low |
Timedifferent | 45-120 min | 1-6 Wochen | 1-3 h | 15-30 min |
Participantsdifferent | 2-8 | 4-10 | 4-10 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Waste Map, Prioritized Waste, Improvement Backlog | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Current-state map, Future-state map, Bottleneck list | Root cause notes, Countermeasures |
Tagsno overlap | WasteLeanProcess improvement | QualityProblem solvingRoot cause | LeanFlowWasteDelivery | Root causeIncidentLeanProblem solving |