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Criterion
Four paper stations connect system purpose, quality goals, risk cards and focused investigation with a target and gap profile.
Architecture
LASR (Lightweight Approach for Software Reviews)
Paper illustration: scenarios and architectural decisions are connected to identified risks.
Architecture
ATAM (Architecture Tradeoff Analysis Method)
Paper illustration for Evaporating Cloud.
Systems Thinking
Evaporating Cloud
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Purposedifferent
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.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.The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict.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.
Complexitydifferent
MediumHighMediumLow
Timedifferent
3–4 h for initial assessment; preparation and deeper analysis additionalSeveral meetings plus preparation and analysis; total effort depends on scope60-120 min45-90 min
Participantsdifferent
1 or a small team; particularly suitable for 3–4 peopleEvaluation team, architects, and relevant stakeholders2-82-8
Formatdifferent
Workshop + asyncWorkshop + asyncWorkshopWorkshop + async
Outputdifferent
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 checksPrioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigationsConflict Cloud, Assumption List, Breakthrough Ideas, Next ExperimentsAssumption List, Critical Assumptions, Learning Plan
Tagsno overlap
ArchitectureQualityRiskAssessmentLean
ArchitectureQualityRiskTradeoffsStakeholders
Theory of ConstraintsAssumptionsSystems thinking
AssumptionsRiskDecisionDiscovery
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