Write a product brief people can act on

Define the problem

Describe who is affected, what they are trying to do, and why the current experience fails. Include evidence and avoid prescribing a feature too early.

Bound the work

List the outcome, non-goals, constraints, open questions, and owner. Use plain language that design, engineering, and operations can challenge.

Choose a success signal

Name the behavior that should change after release and how you will observe it. Keep the brief current as decisions are made.