A campaign brief asks for an idea, a feeling, and a set of placements. A product brief asks for users, flows, and a release. Both are reasonable. The trouble starts when they are written in isolation, then forced to meet a week before launch.
We have found it more useful to hold a single conversation first, with both kinds of work on the table. Not a two-hour workshop with forty sticky notes — a shorter meeting, with a few questions that both teams can answer.
Ask these together
- What should someone believe, or be able to do, when the work is out in the world?
- Where will they meet it first — a film, a page, a product, a room?
- What has to be true in the product for the campaign to be honest?
- What can be finished later, and what has to be decided now because it affects both?
The answers will not replace a treatment or a backlog. They will stop the film from promising a feature the product cannot show, and stop the product from shipping a tone the campaign has already abandoned.
If you are writing two briefs this month, try putting them in the same document for a day, even if they later travel separately. The gaps will announce themselves.