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| Criterion |  Operations DMAIC |  Agile ROAM Board |  Operations Root Cause Tree Analysis |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | When work needs to move between different states or columns, it makes that movement and its handoffs legible. It sorts work by value, risk, and delivery ability. The result is captured as a ROAM Board and an Owner List. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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 | Low | Medium | Low |
Timedifferent | 2-12 Wochen | 20-40 min initial, dann laufend | 1-3 h | 15-30 min |
Participantsdifferent | 3-10 | 3-15 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | ROAM Board, Owner List | Cause Tree, Evidence Notes, Countermeasures | Root cause notes, Countermeasures |
Tagsno overlap | Continuous improvementQualityProcess improvement | RiskAgileTrackingAlignment | Root causeTreeIncidentQuality | Root causeIncidentLeanProblem solving |