(resending to NOT just one person) Google found a few links for me. This one is ancient, and not technical much, but has some things to consider briefly: https://www.slideshare.net/NOVL/migrate-from-red-hat-to-suse-linux-enterpris... Slightly more technical, but good idea within: https://www.halolinux.us/migrating-from-redhat-to-suse/info-ejv.html Besides end users, we may want to target vendors too as now may be a good time to have them support things properly, and SUSE has documentation to get them started: https://www.suse.com/partners/isv/porting_and_migration/ SUSE's Unix to Linux migration PDF; this isn't technical,but it has some other good points, e.g. staff training, that might be overlooked by people like me (techies): https://www.suse.com/media/guide/unix_to_linux_migration_in_three_stages_gui... It may even be useful to note that SUSE Manager is made to work with both distributions, which can help with migrations from one to another, not to mention it can be expanded for a company's other software (third-party or in-house) since companies are not likely to just do this all at once with all servers when there are potentially dozens to thousands. Like with a migration from a lesser operating system to Linux, the biggest consideration is probably what is hosted on top, so the more application helps we can find the better; e.g. eDirectory (Novell/NetIQ/Micro Focus) runs on either distribution well, and the steps to do everything are identical other than the need to install a few extra RPMs in the RedHat case, but that's because the vendor designed it for installation on either distribution. Containers (in the Docker or similar sense) should also be easy wins since that's an option here. Since SLES is built with a lot of openSUSE base a lot of things may work without modification, and other things may require little hacks here and there, e.g. modifying /etc/os-release temporarily. Also, is "Machinery" still around? That could be a big help, though I've never tried it on RHEL/CentOS, but the general idea is a good one. Aaron Burgemeister Identity / Security / Linux Consultant