Ansible is an open-source automation tool that helps the 
deployment, configuration management, and orchestration of 
IT infrastructure. It is designed to automate repetitive tasks 
and you can configure lot of things using this tool.

It is Agentless. Ansible uses a push-based architecture so it 
does not require any software agents to be installed on the 
managed hosts. It uses SSH or WinRM protocols to connect to 
remote systems and perform tasks.


It has Playbooks. Ansible playbooks are written in YAML format. 
It consist of a series of tasks that are executed sequentially 
or in parallel. They allow you to define configurations, 
deploy applications, run commands, and perform various actions 
on target hosts.


It has this feature, Infrastructure as Code. Ansible treats 
infrastructure as code, enabling you to define your 
infrastructure and configurations in a human-readable format.

You have an Inventory Management in Ansible. It uses an 
inventory file to keep track of the hosts it manages for 
automation and configuration. The inventory file can be static 
or dynamic, and it allows you to group hosts, define 
variables, and manage host-specific configurations.

The most important thing in Ansible, It has a Module Library. 
Ansible provides a rich set of modules that abstract system 
operations and automation tasks. These modules cover a wide 
range of areas such as package management, file manipulation, 
service management, cloud services, network devices, and more. 
Additionally, you can create your own custom modules to extend 
Ansible's functionality.