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| Criterion |  Architecture Architecture Decision Record |  Agile Sprint Retrospective |  DevOps Blameless Postmortem |
|---|---|---|---|
Purposedifferent | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | When a sprint is over and friction shouldn't simply be carried forward, it opens the view onto collaboration and patterns. It creates space to see causes and changes 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. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 15-45 min | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | 30-90 min |
Participantsdifferent | 1-3 | Scrum Team | 3-12 |
Formatdifferent | Async | Workshop | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Improvement actions, Team agreements | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | RetrospectiveImprovementLearning | Site Reliability EngineeringIncidentLearningReliability |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
