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| Criterion |  Agile Affinity Estimation |  Agile Bucket System |  Agile Acceptance Criteria Workshop |  Agile Ideal Days |
|---|---|---|---|---|
Purposedifferent | 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 story needs clear checkpoints before implementation, it sharpens expectation and scope together. It sorts work by value, risk, and delivery ability. The result is captured as Acceptance Criteria and a Story Update. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 30-90 min | 30-90 min | 20-40 min pro Story | 15-60 min |
Participantsdifferent | 3-12 | 3-12 | 3-6 | 2-9 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Affinity Size Map, Grouped Estimates, Unclear Items | Bucketed Backlog, Relative Estimates, Split Candidates | Acceptance Criteria, Story Update | Ideal Day Estimates, Assumption Notes, Capacity Caveats |
Tagsno overlap | EstimationBacklogRelative sizing | EstimationBacklogRelative sizing | AgileRequirementsRefinementBehavior-Driven Development | EstimationEffortAgile |