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| Criterion |  Architecture Architecture Decision Record |  Systems Thinking Current Reality Tree |  Systems Thinking Iceberg Model |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | 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. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | The Iceberg Model separates visible events from patterns, structures, and mental models. This turns a single observation into a deeper understanding of why a problem keeps recurring. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. |
Complexitydifferent | Low | High | Low | Low |
Timedifferent | 15-45 min | 2-6 h | 30-60 min | 1-2 Tage |
Participantsdifferent | 1-3 | 3-8 | 2-10 | 1-4 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Current Reality Tree, Core Problems, Intervention Ideas | Iceberg Worksheet, Pattern Notes, Intervention Ideas | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | Systems thinkingRoot causeConstraintsCausality | Systems thinkingRoot causePatterns | ArchitectureDocumentationCommunication |