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Selected:Failure Mode and Effects AnalysisIncident Timeline AnalysisRoot Cause Tree AnalysisRoot Cause Analysis
| Criterion |  Operations Failure Mode and Effects Analysis |  DevOps Incident Timeline Analysis |  Operations Root Cause Tree Analysis |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | High | Medium | Medium | Medium |
Timedifferent | 2-6 h | 60-180 min | 1-3 h | 1-4 h |
Participantsdifferent | 3-10 | 3-10 | 2-8 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Cause Tree, Evidence Notes, Countermeasures | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | RiskQualityOperationsRoot cause | IncidentTimelineSite Reliability Engineering | Root causeTreeIncidentQuality | Root causeProblem solvingQualityIncident |