Deployment Metrics and Observability Questions

Define and instrument metrics that measure deployment health and pipeline performance and implement feedback loops that drive safe releases. Topics include measuring lead time for changes, deployment frequency, change failure rate, mean time to recovery, instrumenting deployments and canary analysis, building deployment dashboards and alerts, correlating code changes to runtime health, automating rollback triggers based on metrics and alerts, and using telemetry to improve pipeline throughput and reliability. Interviewers look for understanding of metric selection, instrumentation, alerting, and how to close feedback loops between operations and development.