View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Innovation Double Diamond |  Architecture Architecture Decision Record |  Operations A3 Problem Solving |  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. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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 | Medium | Low |
Timedifferent | Wochen bis Monate | 15-45 min | 45-90 min | 1-2 Tage |
Participantsdifferent | 3-12 | 1-3 | 2-5 | 1-4 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | ADR File, Decision Log, Rationale | A3 Report, Action Plan, Root Cause Analysis | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | ProcessDivergenceInnovation | ArchitectureRationaleDocumentationGovernance | LeanProblem solvingCoachingOperations | ArchitectureDocumentationCommunication |