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| Criterion |  Operations A3 Problem Solving |  DevOps Blameless Postmortem |  Architecture Software Architecture 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. | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | 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. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 45-90 min | 30-90 min | 1-2 h |
Participantsdifferent | 2-5 | 3-12 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Postmortem Doc, Action Items, Timeline | Architecture Canvas, Goals, Constraints, Quality Attributes |
Tagsno overlap | LeanProblem solvingCoachingOperations | Site Reliability EngineeringIncidentLearningReliability | CanvasArchitectureAlignmentWorkshop |
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