What makes a strong brief

Most briefs are bad.

Not because the people writing them are bad at their jobs. Because briefs are usually written under time pressure, by people who are too close to the product, for audiences (agencies, freelancers, internal teams) who have less context than they need.

The result is creative work that answers the wrong question brilliantly, or the right question badly, or — most commonly — no particular question at all.

A strong brief does three things that most briefs fail to do.

First, it identifies the specific audience behaviour the work needs to change. Not "increase awareness" or "drive conversions" — but the specific mental or behavioural shift required. What does the target audience currently believe? What do we need them to believe instead? What would need to be true for them to act differently?

Second, it articulates a single, honest proposition. Not a list of benefits — a single most important thing. The discipline of choosing one thing forces the strategic clarity that makes creative work possible. If you cannot write one sentence that captures the core of what you are saying, you have not finished the strategy yet.

Third, it provides the evidence that makes the proposition credible. Claims without proof are just assertions. The brief should include the specific evidence — customer stories, data, demonstrations — that allows the creative work to earn belief, not just claim it.

The brief is not an administrative task. It is the most leveraged strategic document in the marketing process. Every hour spent sharpening it saves many hours of misdirected creative work downstream.