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| Criterion |  Architecture arc42 |  Operations 5 Whys |  Operations Runbook |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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 recurring operational tasks or incidents, the method keeps solid action logic ready. It reduces uncertainty when time pressure, role changes, or rare situations demand fast access. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | Low | Low | Low | High |
Timedifferent | 1-2 Tage | 15-30 min | 20-60 min | 2-8 h |
Participantsdifferent | 1-4 | 2-6 | 1-4 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Architecture Document, Context View, Runtime View, Deployment View | Root cause notes, Countermeasures | Runbook, Checklist, Escalation Path | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | ArchitectureDocumentationCommunication | Root causeIncidentLeanProblem solving | OperationsReliabilityDocumentation | Problem solvingRoot causeDecisionOperations |