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| Criterion |  Agile Bucket System |  DevOps Blameless Postmortem |  Agile Planning Poker |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | When a large batch of work needs a fast, rough estimate, it sorts items into predefined size buckets. It sorts work by value, risk, and delivery ability. The result is captured as a Bucketed Backlog, Relative Estimates, and Split Candidates. | 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 estimates within the team diverge too much, it puts differing expectations on a common test bench. It separates rough complexity from unspoken assumptions. | 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 | 30-90 min | 30-90 min | 2-5 min je Item | 45–75 min |
Participantsdifferent | 3-12 | 3-12 | 3-9 | Team members involved |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Bucketed Backlog, Relative Estimates, Split Candidates | Postmortem Doc, Action Items, Timeline | Relative Estimates, Assumption Notes, Split Candidates | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | EstimationBacklogRelative sizing | Site Reliability EngineeringIncidentLearningReliability | EstimationAgileRelative sizingTeam | RetrospectiveLearningReflectionTeam |