Learn DevOps by typing real commands.
6 playgrounds, 124+ bite-sized lessons. Pick a topic, clear the levels, earn XP.
150 XP to Level 2
1. Type real commands
Every lesson is a tiny mission in a real-looking terminal.
2. Level up
Clear 4 levels per topic, earn XP and unlock badges.
3. Prove it
Test yourself in the Challenge Arena against the clock.
Step-by-step playgrounds
Pick a playground
New to DevOps? Go in order, left to right. Each playground has 4 levels, from your first command to real-world skills.
Linux Playground
Your first terminal. Move around, manage files, find anything.
4 levels · 22 commands
Git Playground
Save your work, travel back in time, and collaborate like a pro.
4 levels · 20 commands
Docker Playground
Package any app into a container and run it anywhere.
4 levels · 21 commands
Kubernetes Playground
Deploy, scale and fix apps on a real-looking cluster with kubectl.
4 levels · 21 commands
Terraform Playground
Build cloud infrastructure from code — plan it, apply it, destroy it.
4 levels · 20 commands
CI/CD Playground
Write a GitHub Actions pipeline line by line, then run and debug it.
4 levels · 20 commands
Challenge Arena
Test what you learned
Real incidents, broken configs and speed rounds. Use Practice mode if you want to learn without the clock.
Terminal Challenge
Type real kubectl, docker and terraform commands to diagnose and fix a live incident.
Command Ninja
Type the correct Git, Docker, Kubernetes or Terraform command as fast as you can.
Config Debug Challenge
Spot the broken line in real YAML, Dockerfile and Terraform snippets.
Terraform Escape Room
Five locked doors, five Terraform puzzles. Answer correctly to escape.
Incident Commander
Put the incident-response steps in the right order against the clock.
CI/CD Simulator
Make the right call at each pipeline decision: rollbacks, canaries and more.
Next step
Know the commands? Build a real project.
Download complete end-to-end DevOps projects: code, step-by-step guide, architecture diagram and every file. Go Pro for 1:1 help from Ajith.
- Full source code, configs & diagrams
- Step-by-step setup guides
- Pro: 1:1 setup help & walkthroughs