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Selected:Lean StartupATAM (Architecture Tradeoff Analysis Method)Riskiest Assumption TestLASR (Lightweight Approach for Software Reviews)
| Criterion |  Innovation Lean Startup |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Product Discovery Riskiest Assumption Test |  Architecture LASR (Lightweight Approach for Software Reviews) |
|---|---|---|---|---|
Purposedifferent | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | 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 an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | 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 | Medium | High | Medium | Medium |
Timedifferent | Wochen bis Monate je Lernzyklus | Several meetings plus preparation and analysis; total effort depends on scope | 1-2 Wochen pro Iteration | 3–4 h for initial assessment; preparation and deeper analysis additional |
Participantsdifferent | 2-8 | Evaluation team, architects, and relevant stakeholders | 2-6 | 1 or a small team; particularly suitable for 3–4 people |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Prioritized Assumption List, Test Plan, Results Report | 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 | LeanStartupValidationMVP | ArchitectureQualityRiskTradeoffsStakeholders | ExperimentsValidationDiscoveryAssumptions | ArchitectureQualityRiskAssessmentLean |