This document provides guidance on effectively briefing communications agencies. It emphasizes that briefing agencies is important and requires the same level of professionalism as other business activities. A good brief leads to better work, saves time and money, and makes agency remuneration fairer. The principles of an effective brief are to be clear about what is needed from the agency, provide all critical information for the agency to complete the task, and inspire or motivate the agency to do their best work. A key part of any brief is a clear description of the objectives for the work being briefed.