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Selected:Assumption SurfacingLean CanvasArchitecture Decision RecordLASR (Lightweight Approach for Software Reviews)
| Criterion |  Decision Making Assumption Surfacing |  Product Strategy Lean Canvas |  Architecture Architecture Decision Record |  Architecture LASR (Lightweight Approach for Software Reviews) |
|---|---|---|---|---|
Purposedifferent | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | 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 | Low | Medium | Low | Medium |
Timedifferent | 45-90 min | 45-90 min | 15-45 min | 3–4 h for initial assessment; preparation and deeper analysis additional |
Participantsdifferent | 2-8 | 1-6 | 1-3 | 1 or a small team; particularly suitable for 3–4 people |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | Lean Canvas, Core Assumptions, Experiment Backlog | 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 | AssumptionsRiskDecisionDiscovery | StartupLeanAssumptionsBusiness model | ArchitectureRationaleDocumentationGovernance | ArchitectureQualityRiskAssessmentLean |