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Selected:Blameless PostmortemARID (Active Reviews for Intermediate Designs)After-Action ReviewLearning Review
| Criterion |  DevOps Blameless Postmortem |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations After-Action Review |  Operations Learning Review |
|---|---|---|---|---|
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. | 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 missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 30-90 min | 2–4 h review as a planning range; preparation and evaluation additional | 20-45 min | 1-3 h |
Participantsdifferent | 3-12 | Designers, developers as users, and facilitation | 3-12 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Lessons learned, Action items, Event summary | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | ArchitectureEngineeringFeedbackValidationTasks | LearningOperationsImprovement | LearningRetrospectiveIncidentOperations |