Ansible
In plain terms
An agentless automation tool for configuration and deployment.
Going deeper
Ansible automates server configuration, app deployment, and orchestration using simple YAML playbooks over SSH, with no agents to install. It's known for simplicity.
Under the hood
Agentless and idempotent; push-based via SSH, simpler than Chef/Puppet but can be slower at huge scale.
Examples
Server provisioning, app deployment, config management, orchestration playbooks.
Think of it like...
Like a checklist a manager runs across all machines at once to set them up identically.