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| Criterion |  DevOps Incident Command |  Architecture arc42 |  Operations Root Cause Tree Analysis |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. | 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. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Medium | Low | Medium | High |
Timedifferent | As needed | 1-2 Tage | 1-3 h | 2-6 h |
Participantsdifferent | 4-15 | 1-4 | 2-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Incident Log, Action Tracker, Stakeholder Updates | Architecture Document, Context View, Runtime View, Deployment View | Cause Tree, Evidence Notes, Countermeasures | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | IncidentOperationsReliability | ArchitectureDocumentationCommunication | Root causeTreeIncidentQuality | RiskQualityOperationsRoot cause |