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| Criterion |  DevOps Incident Timeline Analysis |  Architecture Architecture Decision Record |  Operations Barrier Analysis |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | For an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. | 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 risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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 | 60-180 min | 15-45 min | 2-4 h | 1-2 Tage |
Participantsdifferent | 3-10 | 1-3 | 2-6 | 1-4 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | ADR File, Decision Log, Rationale | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | IncidentTimelineSite Reliability Engineering | ArchitectureRationaleDocumentationGovernance | Root causeSafetyIncident | ArchitectureDocumentationCommunication |