DevOps

CI/CD, automation, and infrastructure as code - shipping safely and repeatedly.

Watch it animated → Interactive, click-through walkthroughs for DevOps concepts.

Basic

What DevOps Actually Is DevOps isn't a team or a tool - it's the way of working where the people who build software and the people who run it share one loop and one responsibility, so changes ship faster and break less.

Environment Variables & Config (.env, YAML) What config files really do, why settings live outside your code, how environment variables and .env files work, and how YAML/JSON/TOML and config precedence fit together.

Build & Release Basics How source code becomes a thing you can actually ship: what a build produces, why you version and freeze artifacts, and how the same artifact moves from dev to staging to prod.

Intermediate

What a CI/CD Pipeline Actually Does CI/CD is the automated path from a commit to production: every change is built and tested automatically, and releases become small, frequent, and safe to roll back.

Your First Pipeline (GitHub Actions) What a GitHub Actions workflow actually is - events trigger jobs made of steps that run on a runner - then a real ci.yml decoded line by line, plus caching, matrices, secrets, and required checks.

Automating the Boring Stuff (Ops Scripting) Turn the manual tasks you keep redoing by hand into scripts that are faster, repeatable, and self-documenting - from the when-to-automate mindset to a real bash backup script to knowing when to reach for Python and cron.

Zero-Downtime Deploys Ship a new version without a maintenance window: rolling, blue-green, and canary deploys, plus the health checks and migrations that make them safe.

Feature Flags and Rollbacks Ship code dark, flip it on for a few users, and turn it off instantly when it breaks: feature flags decouple deploy from release.

Advanced

Infrastructure as Code (Terraform Basics) Stop clicking around in cloud consoles. Define your servers, networks, and databases in version-controlled files you can review and apply - that's Infrastructure as Code, and Terraform is how a huge slice of the industry does it.