Most content tools start you off with a flat list of projects, and that works fine right up until you're juggling more than one brand or more than one channel for the same brand. At that point "projects" stops being a structure and starts being a junk drawer.
Domain: the account you actually own
A Domain is the top level — your agency's workspace, or a single brand's workspace if you're running your own channels directly. Everything else nests inside it, and a client never sees another client's Domain. This is the boundary that keeps work properly isolated, not just visually separated in a UI.
Channel: one audience, one identity
Inside a Domain, a Channel represents one distinct audience and one distinct content identity — a specific YouTube channel, a specific brand's Instagram presence, whatever the actual publishing surface is. An agency running several clients has several Channels, each with its own voice, its own recurring format, and its own history, never blended into another client's feed.
Campaign: one story, told across however many formats it needs
A Campaign sits under a Channel and represents a single topic or story you want to tell — not a single video. The model is built so a campaign can bundle a long-form video, a short-form video, a poster, a blog post, a thumbnail, and per-platform post copy under that same underlying idea instead of planning each as an unrelated one-off — exactly which formats a given campaign includes depends on what's actually scoped or purchased for it.
Content item: where review and delivery actually happen
Underneath a Campaign, individual content items are what move through preview, approval, and delivery — see our post on how approvals work for what that looks like day to day. The hierarchy above it is what makes that review step meaningful: you can approve a single item, a campaign's worth of items, or hand a client visibility into exactly the slice of work that's theirs.
Why this has to be decided before you start producing
If you skip straight to producing content and only add structure later, you end up retrofitting Channels and Campaigns onto work that was never scoped that way — and client boundaries in particular are much harder to fix after the fact than to set up correctly on day one. Getting the hierarchy right first is what makes everything built on top of it, from approvals to delivery, actually hold up as volume increases.