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| Criterion |  Facilitation Dot Estimation |  Agile Bucket System |  Agile Specification by Example |  Agile Ideal Days |
|---|---|---|---|---|
Purposedifferent | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | 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 business rules need to become precise, it ties language, example, and test together. It sorts work by value, risk, and delivery ability. The result is captured as an Example Table and Acceptance Tests. | 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 | Low | Medium | Medium | Low |
Timedifferent | 5-20 min | 30-90 min | 60-90 min pro Feature | 15-60 min |
Participantsdifferent | 3-20 | 3-12 | 3-6 | 2-9 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Effort Heatmap, Risk Signals, Discussion Targets | Bucketed Backlog, Relative Estimates, Split Candidates | Example Table, Acceptance Tests | Ideal Day Estimates, Assumption Notes, Capacity Caveats |
Tagsno overlap | EstimationEffortRisk | EstimationBacklogRelative sizing | AgileRequirementsExamplesBehavior-Driven Development | EstimationEffortAgile |