If you're creating a brand new server on the Fediverse, it's probably a good idea to use a domain or subdomain that doesn't mention the server's software.
Software projects can change over the years, either in content or leadership or maintenance, and it may be that your server will eventually end up using different software altogether. This can cause confusion for your users if your server's name mentions software that it doesn't actually run on.
Alternatively, software projects may rename themselves, leaving old names orphaned (as happened in messaging with Jabber -> XMPP).
Also, in some cases software projects trademark their names and forbid a name's use on servers running different software. This could make server software migration difficult legally.
For all these reasons, your server's long term future may be better if you use a software-neutral domain or subdomain right from the beginning.
#Fediverse #SelfHosting #FediAdmin
(Thank you to @dj3ei for suggesting this ? )