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CMDB
ITILConfiguration management database: the ITSM record of configuration items, their attributes and their relationships. A CMDB is meant to answer what depends on what and who owns it. In practice most are stale because they are updated by hand, which is why RCA methods that require an accurate CMDB stall and why observed topology is used instead.
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Root causeContributing factorTrigger, propagation, failureCausal chainEvidence indexSev1 / Sev2Post-incident reviewBlameless postmortemKnown errorProblem recordCause codeCAPAMTTIMTTDMTTRTime to RCARCA SLAService creditRFO (Reason for Outage)Change attributionService ownership mapTopologyTelemetry coverageAbstentionConfidence statementVPC deploymentAir-gappedData egressExpert podReplay bake-offOutcome-based pricingManaged serviceHuman-in-the-loop sign-offITSM