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| Criterion |  Architecture Architecture Communication Canvas |  Operations Root Cause Analysis |  Architecture C4 Model |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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. | 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. | 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 | Medium | Medium | Low | Low |
Timedifferent | 60-120 min | 1-4 h | 1-4 h | 15-30 min |
Participantsdifferent | 2-8 | 3-8 | 1-5 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Context Diagram, Container Diagram, Component Diagram | Root cause notes, Countermeasures |
Tagsno overlap | ArchitectureCommunicationStakeholdersCanvas | Root causeProblem solvingQualityIncident | ArchitectureCommunicationVisualization | Root causeIncidentLeanProblem solving |