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Selected:Soft Systems MethodologyATAM (Architecture Tradeoff Analysis Method)Architecture Decision RecordLASR (Lightweight Approach for Software Reviews)
| Criterion |  Systems Thinking Soft Systems Methodology |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Architecture Architecture Decision Record |  Architecture LASR (Lightweight Approach for Software Reviews) |
|---|---|---|---|---|
Purposedifferent | Soft Systems Methodology helps explore unclear or politically charged problems systematically. Instead of forcing a quick answer, the method builds a shared understanding of perspectives and room for action. | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. |
Complexitydifferent | High | High | Low | Medium |
Timedifferent | 0.5-3 Tage | Several meetings plus preparation and analysis; total effort depends on scope | 15-45 min | 3–4 h for initial assessment; preparation and deeper analysis additional |
Participantsdifferent | 5-15 | Evaluation team, architects, and relevant stakeholders | 1-3 | 1 or a small team; particularly suitable for 3–4 people |
Formatdifferent | Workshop | Workshop + async | Async | Workshop + async |
Outputdifferent | Rich Picture, Root Definitions, Conceptual Models, Change Agenda | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | ADR File, Decision Log, Rationale | 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 |
Tagsno overlap | Soft systemsComplexitySensemakingSystems thinking | ArchitectureQualityRiskTradeoffsStakeholders | ArchitectureRationaleDocumentationGovernance | ArchitectureQualityRiskAssessmentLean |