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Selected:ARID (Active Reviews for Intermediate Designs)Blameless PostmortemStarfish Retrospective4Ls Retrospective
| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  DevOps Blameless Postmortem |  Agile Starfish Retrospective |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | 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. | When improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 30-90 min | 45-90 min | 45–75 min |
Participantsdifferent | Designers, developers as users, and facilitation | 3-12 | 4-12 | Team members involved |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Postmortem Doc, Action Items, Timeline | Starfish Board, Practice Changes, Experiments | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveImprovementExperimentsTeam | RetrospectiveLearningReflectionTeam |