When incidents strike, dashboards beat guesswork. Start with golden signals: latency, traffic, errors, and saturation. Ship structured logs from day one so you can correlate deploys with spikes in 5xx responses.
OpenTelemetry and Prometheus are common starting points; Grafana ties visualizations together. DevOpsWala observability courses include labs that break things on purpose so you practice reading alerts and narrowing blast radius.
Observability is a team sport: define SLOs with product owners, document runbooks, and rehearse failures in staging before production surprises you.
