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Causal chain

process
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The ordered sequence of events linking the root cause to the customer-visible failure, with each step supported by evidence. A complete causal chain answers the question at every hop: this happened, which caused that. Gaps in the chain are where confidence drops, and an honest RCA marks them rather than filling them with assumption.

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Root causeContributing factorTrigger, propagation, failureEvidence indexSev1 / Sev2Post-incident reviewBlameless postmortemKnown errorProblem recordCause codeCAPAMTTIMTTDMTTRTime to RCARCA SLAService creditRFO (Reason for Outage)Change attributionService ownership mapCMDBTopologyTelemetry coverageAbstentionConfidence statementVPC deploymentAir-gappedData egressExpert podReplay bake-offOutcome-based pricingManaged serviceHuman-in-the-loop sign-offITSM