Cloud audit logging: what to log, retention, and alerting use cases (engineer-friendly, step-by-step)
If you’re setting up cloud audit logging (AWS/Azure/GCP) and feel overwhelmed by what to log , how long to retain it , and when to alert , this engineer-friendly guide breaks it down step-by-step with practical use cases—so you can improve security and troubleshooting without drowning in noisy logs. Cloud Audit Logging — what actually matters: ✅ What to log (must-have) IAM/auth changes, privileged actions, policy edits Network/security changes (SG/NACL/firewall, public exposure) Data access events (storage reads, DB admin actions) Kubernetes + workload changes (deployments, secrets, config) ✅ Retention (simple rule of thumb) Short-term “hot” logs for investigations + debugging Longer retention for compliance + incident timelines Archive strategy so costs don’t explode ✅ Alerting that’s useful (not noise) Root/admin activity, unusual geo/logins Permission escalations, key creation, MFA disabled Sudden spike in denied actions or data downloads Changes to logging itself (tampering / ...