is a document of a design project developed by a person or team (the designer or design staff) in consultation with the client. This defines the project deliverables and scope, as well as the products or works (performance and aesthetic), timing and budget. It can be used in many projects including This includes projects in the fields of architecture, interior design, and industrial design. Design briefs are also used to evaluate the effectiveness of the design after production and during the construction process to keep the project on track and within budget. Some companies rely on this method more than others, and there is a risk involved. Towards more accountability in the design process In contrast many people find it very useful, but it also usually changes over time and is set over the course of a project's development, often being signed off on by the client and designer at specific stages of the project.