The design goals are the central part of the brief. You may be aiming to enhance the users flow, increase the app's efficiency, or supply your company's employees with a powerful project management tool.
Thus, the designers will understand what they are working on and what the client expects at the end of the journey. Considering the project's type and objectives, they define which features to include, the primary focus, and the client's priorities.
If you need to redesign
an existing product, make sure to mention the metrics and KPIs you want to be improved. For instance, your primary goal is to increase conversion or keep the users' attention on a specific feature. Thus, the designers will know what is the project's priority focus.
Also, provide the designers' team with all the existing requirements and specifications If you've already set the project's structure. However, in many cases, the initial plan lacks details and contains many gaps regarding how to achieve the goals.
Designers often start working on a project after a detailed study of the client's needs and build the structure in collaboration. If finding means to meet the set goals will be the hired team's responsibility, be sure to state it in your brief.