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Selected:ATAM (Architecture Tradeoff Analysis Method)Bucket SystemLASR (Lightweight Approach for Software Reviews)Dot Estimation
| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Agile Bucket System |  Architecture LASR (Lightweight Approach for Software Reviews) |  Facilitation Dot Estimation |
|---|---|---|---|---|
Purposedifferent | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | 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. | LASR helps development teams identify where their software falls short of important quality goals and which improvements to consider. A small group with existing system knowledge can make an initial assessment and investigate open questions in more detail. | 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. |
Complexitydifferent | High | Medium | Medium | Low |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 30-90 min | 3–4 h for initial assessment; preparation and deeper analysis additional | 5-20 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 3-12 | 1 or a small team; particularly suitable for 3–4 people | 3-20 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Bucketed Backlog, Relative Estimates, Split Candidates | Lean Mission Statement describing the software’s purpose, Prioritized quality goals and evaluation criteria, Risks and estimated gaps against quality goals, More closely examined findings and open checks | Effort Heatmap, Risk Signals, Discussion Targets |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | EstimationBacklogRelative sizing | ArchitectureQualityRiskAssessmentLean | EstimationEffortRisk |