[carlsborg]

While developing such ansible scripts, or prototyping, you usually need to run the commands manually, so this becomes useful.

[yjftsjthsd-h]

For that, do you really need to control more than one machine at a time?

[carlsborg]

Sure if you are prototyping a cluster with various types of nodes.

[scarby2]

just run the playbook on a test cluster?

[pletnes]

Tmux with sync-panes is similar but, imho, more convenient.