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| Criterion |  Architecture C4 Model |  Operations Fishbone Diagram |  Operations Gemba Walk |  Operations Scatter Diagram |
|---|---|---|---|---|
Purposedifferent | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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. | When the question is whether two measures are related, the method makes patterns in the data picture visible. It separates felt correlations from relationships that actually show up in the data. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 1-4 h | 30-60 min | 30-120 min | 30-90 min |
Participantsdifferent | 1-5 | 2-8 | 2-6 | 1-4 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Fishbone Diagram, Cause Categories, Investigation Backlog | Observation Notes, Improvement Ideas | Scatter Plot, Korrelationsnotiz, Hypothesenliste |
Tagsno overlap | ArchitectureCommunicationVisualization | Root causeQualityOperations | LeanObservationProcessOperations | Root causeQualityVisualization |