If it can run X11 on a directly connected display, it's probably not embedded spaces ;). Don't take this comment too seriously, however raspberry pi is definit

If it can run X11 on a directly connected display, it's probably not embedded spaces ;). Don't take this comment too seriously, however raspberry pi is definitely at the "more desktop-like" end of the embedding pool. As for systemd, it's an interesting set of tools, and one can if one wishes pick which ones are active in a system, if that system is complex enough to be running Linux (or other compatible OS) to begin with.