Spaces
A space is a group's own private internet. It's the boundary everything lives inside: the members, the chat, the posts, the files, the money. Almost everything else in DFOS is something that happens inside a space.
Private by default
Spaces are private by default. What happens in a space stays with its members — if you're not in it, you can't see it. A private space you don't belong to doesn't even acknowledge it exists: it simply reads as not found. Search and feeds never reach into a space you're not part of.
A space can choose to open a window to the outside — a public profile, a public post, a public channel — but that's always an explicit, opt-in choice, and what's inside stays members-only unless someone decides otherwise. See Who can see what for the full picture of what a space can show the world.
Laid out like a desktop
Inside, a space is arranged a bit like a desktop: admins lay out chat, posts, files, a calendar, and other tiles into a shared layout that every member sees the same way — so no two spaces look quite alike. See The desktop.
Members, roles, and groups
Everyone in a space has a role — member, admin, or owner — that sets what they can do. Spaces can also organize into groups: rooms within the space with their own members and access rules, including paid and private ones.
It outlives any one person
A space isn't tied to whoever started it. People come and go; the space, and everything that's been made in it, stays. Content you create keeps your name on it even after you leave.
For how spaces actually work — roles, joining, what admins can and can't see — see Spaces in Using DFOS.