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| Criterion |  Architecture C4 Model |  Architecture Request for Comments |  Architecture LASR (Lightweight Approach for Software Reviews) |
|---|---|---|---|
Purposedifferent | 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. | An RFC clarifies architecture context, options, and consequences. It structures technical context, alternatives, tradeoffs, open questions, and review feedback, and captures the result as an RFC document, reviewer comments, and a decision rationale. | 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 | Medium |
Timedifferent | 1-4 h | 1-3 Wochen vom Draft bis zur Entscheidung | 3–4 h for initial assessment; preparation and deeper analysis additional |
Participantsdifferent | 1-5 | 3-20 Reviewer | 1 or a small team; particularly suitable for 3–4 people |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | 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 |
Tags1 shared | ArchitectureCommunicationVisualization | ArchitectureDecisionAsyncGovernance | ArchitectureQualityRiskAssessmentLean |
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