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| Criterion |  Decision Making Eisenhower Matrix |  Architecture Architecture Decision Record |  Operations 5 Whys |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | It separates true priorities from noise so it becomes clear what should be done now, scheduled, delegated, or dropped. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. | 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 | Low | Low | Low | Medium |
Timedifferent | 15-30 min | 15-45 min | 15-30 min | 1-4 h |
Participantsdifferent | 1-6 | 1-3 | 2-6 | 3-8 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Eisenhower Matrix, Action List, Delegation Notes | ADR File, Decision Log, Rationale | Root cause notes, Countermeasures | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | PrioritizationFocusTasks | ArchitectureRationaleDocumentationGovernance | Root causeIncidentLeanProblem solving | Root causeProblem solvingQualityIncident |