The problem is quite old: A large number of servers need to be set up or homogenized, ideally with minimal effort. This problem has been solved several times. So-called orchestration tools execute specific commands on multiple systems based on predefined instructions.

Examples of such tools are Puppet, Chef, or CFEngine. However, these representatives have one major disadvantage for me: they require a client to be installed on the remote side for execution.

This is where Ansible comes in. Ansible uses only an SSH connection to execute scripts or playbooks on the clients.