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| Criterion |  Operations A3 Problem Solving |  Architecture C4 Model |  Operations Gemba Walk |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 45-90 min | 1-4 h | 30-120 min | 60-120 min |
Participantsdifferent | 2-5 | 1-5 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Context Diagram, Container Diagram, Component Diagram | Observation Notes, Improvement Ideas | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | LeanProblem solvingCoachingOperations | ArchitectureCommunicationVisualization | LeanObservationProcessOperations | ArchitectureCommunicationStakeholdersCanvas |