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| Criterion |  Innovation Double Diamond |  Architecture Architecture Decision Record |  Architecture C4 Model |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | 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. | 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. | 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 | Medium | Low | Low | Low |
Timedifferent | Wochen bis Monate | 15-45 min | 1-4 h | 1-2 Tage |
Participantsdifferent | 3-12 | 1-3 | 1-5 | 1-4 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | ADR File, Decision Log, Rationale | Context Diagram, Container Diagram, Component Diagram | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | ProcessDivergenceInnovation | ArchitectureRationaleDocumentationGovernance | ArchitectureCommunicationVisualization | ArchitectureDocumentationCommunication |