Ansible SSHs into servers (or talks WinRM on Windows) and applies idempotent tasks — install packages, copy configs, restart services. No agent daemon required. Example: a playbook that installs nginxA high-performance web server and reverse proxy — event-driven design for massive concurrency., templates `/etc/nginxA high-performance web server and reverse proxy — event-driven design for massive concurrency./nginxA high-performance web server and reverse proxy — event-driven design for massive concurrency..conf`, and ensures the service is running on ten hosts in parallel.

Ansible made infrastructure automationUsing machines or software to perform tasks with minimal human intervention. approachable with plain YAML and SSHSecure Shell — encrypted remote login, command execution, and file transfer over networks..

It competed with Puppet and Chef and became Red Hat's default ops automationUsing machines or software to perform tasks with minimal human intervention. stack.