[Koha] Ubuntu vs. Debian

Big picture questions for me: What, beyond the immediate differences between what Debian and Ubuntu are known for, are the differences as regards getting a working Koha installation? Is it just that Koha made for Debian but Ubuntu is close enough that it works on Ubuntu too? Or does some other relationship hold as well? I haven’t seen discussion of Koha under Linux Mint. Is that because Mint is different enough not to be compatible, or just because Mint is not as known for servers? Thanks, Br. C.S. Hayward, https://cshayward.com.