So the difference between PieFed and Lemmy mostly becomes interface? Or is it the server backend?
It's both the interface and the backend, but the backends still share ActivityPub compatibility, so they can still federate together. Kbin/mbin are also different software but similarly are able to federate with Lemmy (and the rest of the fediverse) via ActivityPub.
As both projects continue to develop, there could emerge significant differences in functionality, but it's far too early to know.
So the difference between PieFed and Lemmy mostly becomes interface? Or is it the server backend?
It's both the interface and the backend, but the backends still share ActivityPub compatibility, so they can still federate together. Kbin/mbin are also different software but similarly are able to federate with Lemmy (and the rest of the fediverse) via ActivityPub.
As both projects continue to develop, there could emerge significant differences in functionality, but it's far too early to know.
Some differences are listed here https://join.piefed.social/features/
Thank you. I need to read this.
It sounds like the advantages are really for the instance owners.
Nope, scroll down a bit further to the section titled "Differences between Lemmy and PieFed".