Ansible

Ansible is an open-source IT automation engine created by Michael DeHaan in 2012 and now stewarded by Red Hat. It configures servers, deploys applications, and orchestrates multi-tier changes over SSH, so managed nodes need no agent installed. Playbooks describe the target state in YAML, and the engine applies changes idempotently, which makes repeated runs safe and predictable across large fleets. Its low barrier to entry, agentless design, and large module library made it one of the most widely used configuration tools in operations. The same playbooks handle provisioning, configuration, and application deployment across mixed fleets.

Key Capabilities:

• Agentless execution over SSH and WinRM

• Idempotent playbooks written in human-readable YAML

• Thousands of modules and roles distributed through Ansible Galaxy

• Inventory management for static and dynamic cloud hosts

• Roll-out control with serial batching and handlers

• GPL-licensed core with the commercial Red Hat Ansible Automation Platform