When I was first starting to learn how to build a scalable application, I wanted to make a render farm for Blender animations and so I did. It’s full of TBD’s, but hey! It works and it works well, I’ve used it on many projects. It can be used with preemptible instances on major cloud providers to rip through any rendering you need. Google owns a similar product named Zync, but mine is open source and web based instead of a thick plugin for your 3D software.
Check it out: https://code.stevenpolley.net/steven/cyclescaler