Containerization, orchestration, CI/CD pipelines, and server management.
Production breaks and you have ten thousand log lines. Structured logging — JSON events, honest levels, request IDs — finds you the five lines that matter.
You don't need LaunchDarkly to survive a bad deploy. A decision protocol, your host's rollback button, git revert, and an env-var kill switch cover it.
A solo SaaS monitoring stack on free tiers: uptime checks, Sentry error triage, cookieless analytics — and the 15-minute weekly review that keeps it honest.