It’s Linux designed around modern containerization and microservice technologies. The “cloud” naming is a bit of a misnomer, but the same abstracted technologies that help run a modern data center will help make sure your handheld’s launcher doesn’t break because a game or comparability layer wants to use a different database version. https://github.com/cncf/toc/blob/main/DEFINITION.md
Weird. That used to say "container-native", which at least makes sense -- it heavily emphasizes container technologies like Flatpak, Docker/Podman, and Distrobox.
There's no yum or dnf like on a standard Fedora system (though you can use rpm-ostree if you are desperate). As an "immutable" distro, it's designed so that you do not install apps at the system level.