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| Criterion |  Engineering Kanban |  Agile Bucket System |  Agile Ideal Days |  Agile Affinity Estimation |
|---|---|---|---|---|
Purposedifferent | When work sits in too many parallel streams, throughput suffers and no one sees the bottlenecks. Kanban makes the flow of work visible and limits overload so a system becomes calmer and more predictable. | 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 effort needs to be thought of as real working time, it offers a simple common denominator for comparison. It sorts work by value, risk, and delivery ability. The result is captured as Ideal Day Estimates, Assumption Notes, and Capacity Caveats. | 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. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | Ongoing | 30-90 min | 15-60 min | 30-90 min |
Participantsdifferent | 2-12 | 3-12 | 2-9 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Kanban board, WIP policies, Flow metrics | Bucketed Backlog, Relative Estimates, Split Candidates | Ideal Day Estimates, Assumption Notes, Capacity Caveats | Affinity Size Map, Grouped Estimates, Unclear Items |
Tagsno overlap | FlowVisual managementDelivery | EstimationBacklogRelative sizing | EstimationEffortAgile | EstimationBacklogRelative sizing |