harmbugler

The basic idea is read-only system files with flatpak for apps. A ‘rebase’ more or less downloads another system image to boot into. You can even rollback to prior images i.e., rollback to Silverblue.

The Fedora project explains it better and has additional resources here: https://docs.fedoraproject.org/en-US/atomic-desktops/

If you install one of the Fedora Atomic distros e.g., Silverblue, you can rebase to other atomic distros e.g., Bazzite very simply with a single command and reboot.

Then you have graduated from being a newb and can choose your own distro.

If they play their cards right, they might destroy Microsoft.