Monitoring, incident response, on-call, and the discipline of keeping systems up.
The three pillars of observability explained plainly — what metrics, logs, and traces each tell you, and which one to reach for first depending on the question you're actually asking.
A practical, repeatable framework for finding a real root cause instead of stopping at the first plausible explanation — the Five Whys, contributing-vs-root-cause, and writing a blame-free postmortem.
Practical credential hygiene for real projects — why secrets don't belong in source control, how .gitignore and environment variables actually protect you (and where they don't), and what to do if a secret is committed by mistake.
CI/CD explained without the buzzwords — what continuous integration and continuous deployment actually automate, and what a real pipeline looks like end to end.
What idempotent actually means for a deployment or automation script, why it matters when a script might be run twice by accident, and concrete patterns for writing scripts that are safe to re-run.