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| Criterion |  DevOps Blameless Postmortem |  Delivery RAID Log |  Agile 4Ls Retrospective |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
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. | Helps clarify scope, sequence, and delivery flow in concrete terms. It makes work, boundaries, and order steerable. The result is captured as a RAID Log and a source for status reporting. | 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. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. |
Complexitydifferent | Medium | Low | Low | High |
Timedifferent | 30-90 min | 30 min Setup, dann laufend | 45–75 min | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 3-12 | 1-3 maintaining, briefing for everyone | Team members involved | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | RAID Log, Status Report Source | 4Ls Board, Learning Themes, Improvement Actions | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | RiskTrackingStakeholdersGovernance | RetrospectiveLearningReflectionTeam | ArchitectureQualityRiskTradeoffsStakeholders |