Why DevOps?
The foundation behind three closely related infrastructure careers
Software used to break at the wall between the people who built it and the people who ran it: developers shipped code, then threw it over to operations to deal with the fallout. DevOps exists to close that gap. It's a mindset and a set of practices — automation, continuous integration, infrastructure as code, monitoring — that let teams ship changes in minutes instead of weeks, catch problems before customers do, and recover fast when something does go wrong. That's why it's not a niche specialism anymore; it's the operating model behind almost every modern engineering org, from five-person startups to banks and airlines running thousands of deployments a day.
That's also why it's one of the highest-demand, best-paid entry points into tech infrastructure, and it opens the door to several closely related roles. A DevOps Engineer builds and maintains CI/CD pipelines, automates infrastructure, and keeps deployments fast and reliable. A Site Reliability Engineer (SRE) focuses on uptime, observability, and incident response for large-scale systems. A Platform / Cloud Engineer designs the underlying cloud infrastructure and internal developer platforms that other teams build on. Whichever direction you lean toward, the roadmap below covers the shared foundation all three roles are built on.
Quick intro — what is DevOps?
A quick primer before you start the roadmap. Opens in a small player, no need to leave the page.
The DevOps Roadmap
Work through these in order. Each step has a short lesson, official docs, and a repo to practice in.
Linux & Networking Basics
Command line, file systems, permissions, and the core networking concepts everything else on this page builds on.
Version Control (Git)
Branching, merging, pull requests, and collaborating on code through GitHub or GitLab.
Scripting (Bash & Python)
Automate repetitive tasks — the backbone of every DevOps workflow.
Containers (Docker)
Package applications with their dependencies so they run the same everywhere.
CI/CD Pipelines
Automate build, test, and deploy with tools like Jenkins and GitHub Actions.
Orchestration (Kubernetes)
Deploy, scale, and manage containers in production — the industry standard for orchestration.
Infrastructure as Code (Terraform)
Define and version your infrastructure as code instead of clicking through consoles.
Cloud Platforms (AWS / Azure / GCP)
Core services — compute, storage, networking, IAM — on at least one major cloud provider.
Observability & Monitoring
Prometheus, Grafana, and logging — know when something breaks before your users do.
Security (DevSecOps)
Bake security scanning and best practices directly into the pipeline.
GitHub Projects
Real, buildable projects to put on your own GitHub
CI/CD Pipeline with GitHub Actions
Fork a starter workflow and build an automated pipeline that lints, tests, and deploys on every push.
Dockerized Microservice App
Spin up a multi-container app with Docker Compose, then containerize a small service of your own.
Kubernetes Deployment Playground
Deploy sample manifests to a local cluster, then scale, roll back, and manage config the way teams do in production.
Terraform Cloud Infrastructure
Write your first Terraform config to provision and version infrastructure instead of clicking through a console.
Track complete
Ten steps, ten real tools. Push what you built to GitHub so it's visible to employers, then keep going — DevOps is learned by shipping, not just reading.
Where next?
Keep exploring by domain or drill into a single skill