
How to Write a Design Brief | Writing Examples

the vision is not in any sense a spec. It's mainly a persuasive piece that might be in the form of a storyboard, a narrative such as a white paper, or a special type of prototype referred to as a visiontype.
Marty Cagan • INSPIRED: How to Create Tech Products Customers Love (Silicon Valley Product Group)
What the brief should not do is suggest solutions. That’s our job. This is important to remember, because a proposed direction or solution from a client is often difficult to forget and may serve to limit a creative team’s thinking.