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Selected:Fault IsolationC4 ModelLASR (Lightweight Approach for Software Reviews)Architecture Communication Canvas
| Criterion |  Engineering Fault Isolation |  Architecture C4 Model |  Architecture LASR (Lightweight Approach for Software Reviews) |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 30-180 min | 1-4 h | 3–4 h for initial assessment; preparation and deeper analysis additional | 60-120 min |
Participantsdifferent | 1-6 | 1-5 | 1 or a small team; particularly suitable for 3–4 people | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Context Diagram, Container Diagram, Component Diagram | 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 | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ArchitectureCommunicationVisualization | ArchitectureQualityRiskAssessmentLean | ArchitectureCommunicationStakeholdersCanvas |