Depends what you mean with "setting up auth". Once you get into enterprise scenarios, where you need SSO for SSH, Git, your public website, internal tools, abil

Depends what you mean with "setting up auth". Once you get into enterprise scenarios, where you need SSO for SSH, Git, your public website, internal tools, ability to revoke accesses, handle trusted mobile devices (ie generating QR codes for VPN/Wireguard access), handling 2FA, etc, etc, it takes more than a week. For such scenarios, doing it yourself and doing it correctly becomes immensely difficult.