It’s just a general system setup and config tool. I’m assuming that, like me, you already know how to do all that stuff without yast but it’s good for newbies and people that aren’t super nerds. With all of the anti terminal stuff I always read about on the internet you’d think at least ubuntu would have their own version of it or something similar.
“YaST is a SUSE Linux Enterprise Server tool that provides a graphical interface for all essential installation and system configuration tasks. Whether you need to update packages, configure a printer, modify firewall settings, set up an FTP server, or partition a hard disk—you can do it using YaST.”
But yeah, I actually hardly ever use it myself.
90s was Mandrake, early 2000s was all about Ubuntu.
Since then I’ve tried just about everything including BSDs. It’s all pretty much the same thing, as long as you like the package manager and release schedule. I don’t like snap or flatpak so avoid distros that use them a lot.
These days I mainly just use opensuse leap, although I love arch etc but it’s just too much work for me now.
I only really need a terminal, firefox and emacs and I’m happy.