Monitoring Is How You LearnMonitoring StacksGrafana with OpenTelemetry, Loki, and TempoELK Stack (Elasticsearch, Logstash/Fluentd, Kibana)Arize PhoenixSigNozLangfuseChoosing the Right StackOTel InstrumentationVisualization and AlertingMonitoring PatternsShadow ModeCanary DeploymentsRegression Trace CollectionSelf-Healing AgentsUser Feedback as an Observability SignalDistribution ShiftsMetric Ownership and Cross-Functional GovernanceConclusion