This is a topic to track the FEP-400e and FEP-1b12 reconciliation, aka "How do we handle Groups". I've made this a wiki to let implementers describe their current status quo
Implementations
See also
https://socialhub.activitypub.rocks/t/developers-meeting-2-groups/2302https://socialhub.activitypub.rocks/t/how-to-use-groups/1005https://socialhub.activitypub.rocks/t/groups-implementation/591https://socialhub.activitypub.rocks/t/lets-discuss-groups/519https://socialhub.activitypub.rocks/t/standardizing-on-activitypub-groups/1984