This document provides an introduction to Ansible, describing it as a simple and lightweight automation tool that can be used to execute one-time tasks, perform system administration tasks, and configure servers and routers. It discusses Ansible's key features including being written in Python, being open source, and being easy to install and use. It also provides information on installing and configuring Ansible on various operating systems as well as how to use ad-hoc commands and playbooks with Ansible.