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| Criterion |  Operations Gemba Walk |  Delivery RAID Log |  Operations 5 Whys |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | Helps clarify scope, sequence, and delivery flow in concrete terms. It makes work, boundaries, and order steerable. The result is captured as a RAID Log and a source for status reporting. | 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. | 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. |
Complexitydifferent | Low | Low | Low | High |
Timedifferent | 30-120 min | 30 min Setup, dann laufend | 15-30 min | 2-6 h |
Participantsdifferent | 2-6 | 1-3 maintaining, briefing for everyone | 2-6 | 3-10 |
Formatdifferent | Workshop | Async | Workshop | Workshop |
Outputdifferent | Observation Notes, Improvement Ideas | RAID Log, Status Report Source | Root cause notes, Countermeasures | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | LeanObservationProcessOperations | RiskTrackingStakeholdersGovernance | Root causeIncidentLeanProblem solving | RiskQualityOperationsRoot cause |