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| Criterion |  DevOps Blameless Postmortem |  Architecture Architecture Communication Canvas |  Agile 4Ls Retrospective |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | 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 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 sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 30-90 min | 60-120 min | 45–75 min | 1-2 Tage |
Participantsdifferent | 3-12 | 2-8 | Team members involved | 1-4 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | 4Ls Board, Learning Themes, Improvement Actions | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | ArchitectureCommunicationStakeholdersCanvas | RetrospectiveLearningReflectionTeam | ArchitectureDocumentationCommunication |