A good brand brief fits on one page. It answers who you serve, what problem you solve, and why it matters. It sets a promise you can keep. It guides choices without slowing the work.

Start with a single sentence that states the purpose. Add three message pillars that support the promise. Define the audience with real traits and context. Name the success metrics you will watch. Keep it clear and easy to read.

Use the brief before you design or write. Check colors, type, and copy against the promise. Ask if each choice helps the audience finish a task. If it does not help, leave it out.