What is an Ansible Playbook?

Ansible Playbook is a file in YAML format that describes a set of tasks for automating configuration, deployment, and management of servers and applications. The playbook contains a sequence of instructions that Ansible executes on target hosts, allowing infrastructure to be described as code. An example of a simple playbook that installs nginx on a remote server:

- hosts: webservers
  become: yes
  tasks:
    - name: Install nginx
      apt:
        name: nginx
        state: present