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| Criterion |  Operations 5 Whys |  Architecture Architecture Communication Canvas |  Architecture Software Architecture Canvas |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | The Software Architecture Canvas reduces a system to the most important architecture decisions, constraints, and interfaces. It is useful when teams need a resilient overall picture quickly. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | Low | Medium | Low | High |
Timedifferent | 15-30 min | 60-120 min | 1-2 h | 1-6 Wochen |
Participantsdifferent | 2-6 | 2-8 | 3-10 | 4-10 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Architecture Canvas, Goals, Constraints, Quality Attributes | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Root causeIncidentLeanProblem solving | ArchitectureCommunicationStakeholdersCanvas | CanvasArchitectureAlignmentWorkshop | QualityProblem solvingRoot cause |