I mean, I was still learning how Matrix works, so it took some trial and error - especially voice/video calls - so a few days of reading docs and doing.

Later, though, I stood up my own Matrix server, this time federated, and that only took maybe an hour or two. :)

I did not use the community Ansible playbook that someone else in this thread suggested, because I enjoyed instead figuring out how the individual pieces work together, but I tried it much later, and it seems to work very nicely, so I too can recommend it.