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| Criterion |  Operations 8D Problem Solving |  Delivery Value Stream Mapping |  Delivery Communication Plan |  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. | 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. | When many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. | 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 | Low | Low |
Timedifferent | 1-6 Wochen | 1-3 h | 45-90 min | 15-30 min |
Participantsdifferent | 4-10 | 4-10 | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Current-state map, Future-state map, Bottleneck list | Communication Plan, Channel Matrix, Message Cadence | Root cause notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | LeanFlowWasteDelivery | CommunicationStakeholdersDeliveryPlanning | Root causeIncidentLeanProblem solving |