⚙️ Free Ansible course: automate 1000 servers without an agent
Welcome to the most pedagogical Ansible discovery course. In 7 short lessons, you will understand exactly what Ansible is, why it disrupted IT automation in 2012, and how it is actually used in companies in 2026.
What this course aims for: answering once and for all the questions "what is Ansible?", "Ansible or Terraform?", "why agentless?", "what is a playbook?" — without unnecessary jargon, with concrete examples.
What this course does not do: teach you to write a real playbook or use the ansible-playbook command line. That practical mastery is the subject of the Premium Ansible Course.
What you will discover
Course content
| # | Lesson | Main objective | Duration |
|---|---|---|---|
| 1 | The problem Ansible solves | Understand why manual management does not scale | 5 min |
| 2 | What is Ansible? | Rigorous definition, history, Red Hat's place | 6 min |
| 3 | Inventory, playbook, module | Distinguish the 3 fundamental concepts with a concrete example | 7 min |
| 4 | Agentless and idempotence | The 2 principles that explain everything | 6 min |
| 5 | The Ansible ecosystem | Galaxy, AWX, Collections, comparison with Terraform and Puppet | 7 min |
| 6 | Real use cases | Where Ansible is really used in 2026 | 6 min |
| 7 | Recap and FAQ | Synthesis and 14 frequent questions | 5 min |
| 8 | Quiz and attestation | Validate what you learned with 5 corrected questions | 3 min |
Is this course for you?
- You are a system administrator and you are tired of doing manual SSH on 50 machines.
- You are a junior developer, a beginner in DevOps or in a career change, and you hear "Ansible" everywhere without knowing precisely what it is.
- You are a project manager, product owner or technical manager, and you want to understand how your team automates infrastructure.
- You are preparing an interview for a DevOps, SRE or cloud administrator position, and you want to be able to answer "explain Ansible to me".
- You already know Terraform, and you want to understand where Terraform ends and where Ansible begins.
No heavy technical prerequisites. Basic knowledge of Linux and SSH helps enormously, but is not essential for this discovery course.
The course plan at a glance
What you will know at the end
No commands to memorize. At the end of the course, you will know how to:
- Explain in one clear sentence what Ansible is.
- Distinguish inventory, playbook, module and role without hesitation.
- Answer "Ansible or Terraform?" in an interview with the real arguments.
- Understand why the agentless principle is a real strategic advantage.
- Recognize the cases where Ansible is the right tool — and those where it is not.
- Approach the Premium Ansible Course confidently to move on to practice.
⏱️ Estimated duration
About 35 to 45 minutes of reading in total. Each lesson is self-contained — you can read one per day for a week, or go through everything in one sitting.
Prerequisites and recommended companions
Prerequisites: none formally. Two discovery courses prepare the ground:
- Linux Discovery — Ansible mostly drives Linux servers via SSH.
- Discovering version control (Git) — Ansible playbooks are versioned in Git.
Natural follow-up after this course:
- Terraform Discovery — provisioning cloud infrastructure (complementary to Ansible)
- CI/CD Discovery — automating deployments
- Premium Ansible Course — practical mastery with exercises
Frequent questions in one answer
What is Ansible in one sentence?
Ansible is an open source IT automation tool that allows you, from a simple human-readable YAML file, to configure, deploy and orchestrate dozens to thousands of servers simultaneously, without installing an agent on the target machines.
Ansible or Terraform?
Both, complementary. Terraform creates the infrastructure (virtual machines, networks, databases in the cloud). Ansible configures and deploys what runs inside (packages, services, users, files). Lesson 5 details how the two articulate.
What is the difference between Ansible and Puppet or Chef?
Puppet and Chef require the installation of an agent on each target machine, with a client-server architecture that requires upkeep. Ansible is agentless: it only requires SSH on Linux or WinRM on Windows. Ansible uses YAML (very readable). Puppet has its own DSL, Chef uses Ruby (less accessible). Lesson 4 compares everything.
What is an Ansible playbook?
A playbook is a text file in YAML format that describes a series of tasks to execute on a set of servers. It becomes the single source of truth for your infrastructure's configuration. Lesson 3 shows a complete example.
Is Ansible free?
Ansible Core (the command-line engine) is entirely open source and free. Ansible Automation Platform (the enterprise offering with Red Hat support, AWX, analytics, certified content) is paid. The open source alternative to Ansible Automation Platform is AWX, also maintained by Red Hat.
Does Ansible work on Windows?
Yes, as a target: Ansible can manage Windows machines via WinRM or SSH. As a control node, however, Ansible does not install natively on Windows — you must go through WSL2 or a Linux VM. This is a historical choice (Ansible is developed in Python and designed for Linux).
Is this course enough to be operational in a company?
This course gives you the complete conceptual understanding. To be operational (writing clean playbooks, managing dynamic cloud inventories, using Ansible Vault for secrets, creating reusable roles), you need the Premium Ansible Course with its 30+ hours of practical content.
This discovery course explains how it works, without commands.
To type the real commands (ansible-playbook, ansible-galaxy, dynamic inventory management, Ansible Vault, reusable roles), move on to the Premium Ansible Course — included in all our paid plans.
Other discovery courses not to miss
- Linux Discovery — the OS that Ansible drives
- Introduction to version control — playbooks are versioned
- Git in practice — team workflow for infrastructure code
- Docker Discovery — modern containers, also manageable with Ansible
- Terraform Discovery — complementary to Ansible
- Kubernetes Discovery — container orchestration
Ready? Start with lesson 1 →