If you use Ansible at any larger amount, then you're doing a disservice to yourself if you're not using Mitogen[1][2]. The amount of waiting it has spared me is innumerable at this point.
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[1]: https://scribe.rip/@einarum/speed-up-ansible-with-mitogen-b3...
[2]: https://mitogen.networkgenomics.com/ansible_detailed.html