4 distinguishing features when installing on Ubuntu: 1.) It works on the smallest tier virtual machines on every public cloud; 2.) 100% reliable fax over IP extensions supported out of the box; 3.) fail2ban enabled with customizable ignoreip configurations; 4.) also includes long running database and disk cleanup crontab entries to clear call recordings (if enabled), CDR and CEL tables, and stale voicemail recordings.
Ubuntu 24.04 is security maintained for 10 years - no major version bumps just security updates the whole time. Installs lean, works great. I use it for exactly this.