DevOpsWhat your team ships,explained.

42 lessons · 10 chapters
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Why learn DevOps?

You build the screens. Someone else makes sure they reach users, stay fast and stay up.

Each time you merge a pull request, a chain of machines builds, tests and ships your code. This course shows each link in that chain, one short lesson at a time.

Plain words. Real production examples. Pictures first.

The roadmap

42 lessons in 10 chapters. Start with the big picture, then go one layer deeper with each lesson. The first 8 are ready to read. The rest are on the way.

01

The big picture

4 lessons
  1. 01What is DevOps?15 min
  2. 02The life of a code change20 min
  3. 03Local, staging and production20 min
  4. 04The DevOps toolbox, mapped15 min
02

Servers and networks

4 lessons
  1. 05What is a server?15 min
  2. 06How a request reaches your app20 min
  3. 07Linux in 20 minutes20 min
  4. 08Load balancers, proxies and CDNs20 min
03

The cloud

4 lessons
  1. 09What is the cloud?soon15 min
  2. 10Cloud building blockssoon20 min
  3. 11Vercel, Supabase and friendssoon15 min
  4. 12Regions, zones and staying onlinesoon15 min
04

Containers and Docker

6 lessons
  1. 13The works-on-my-machine problemsoon15 min
  2. 14Containers vs virtual machinessoon20 min
  3. 15Images, containers and registriessoon20 min
  4. 16The Dockerfilesoon25 min
  5. 17Storage and networks in containerssoon20 min
  6. 18Docker Composesoon20 min
05

CI/CD pipelines

5 lessons
  1. 19Continuous integrationsoon15 min
  2. 20Continuous delivery and deploymentsoon15 min
  3. 21A real pipeline with GitHub Actionssoon25 min
  4. 22Rolling, blue-green and canarysoon20 min
  5. 23Feature flags and rollbackssoon15 min
06

Kubernetes

4 lessons
  1. 24Why we need an orchestratorsoon15 min
  2. 25Kubernetes in plain wordssoon25 min
  3. 26What happens when you deploysoon20 min
  4. 27Scaling and self-healingsoon15 min
07

Infrastructure as code

4 lessons
  1. 28Why clicking in a console failssoon15 min
  2. 29Terraform: plan, apply, statesoon25 min
  3. 30Terraform in a real teamsoon20 min
  4. 31GitOps and configuration toolssoon20 min
08

Monitoring and observability

5 lessons
  1. 32Why we monitorsoon15 min
  2. 33Metrics and dashboardssoon20 min
  3. 34Logssoon15 min
  4. 35Tracessoon15 min
  5. 36Alerts, on-call and incidentssoon20 min
09

Security basics

3 lessons
  1. 37Secrets and environment variablessoon15 min
  2. 38Who can do whatsoon15 min
  3. 39Scanning code, images and packagessoon15 min
10

Putting it all together

3 lessons
  1. 40How to read an architecture diagramsoon20 min
  2. 41One request, end to endsoon25 min
  3. 42Where to go deepersoon15 min

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