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| Criterion |  Operations Learning Review |  Agile Affinity Estimation |  Agile Bucket System |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | 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. | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | 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. | 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 | Medium | Low |
Timedifferent | 1-3 h | 30-90 min | 30-90 min | 45–75 min |
Participantsdifferent | 3-10 | 3-12 | 3-12 | Team members involved |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Learning Review Notes, System Factors, Improvement Actions | Affinity Size Map, Grouped Estimates, Unclear Items | Bucketed Backlog, Relative Estimates, Split Candidates | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | LearningRetrospectiveIncidentOperations | EstimationBacklogRelative sizing | EstimationBacklogRelative sizing | RetrospectiveLearningReflectionTeam |