This document discusses several types of briefs used in different contexts. A contractual brief outlines the duties of a client and company and serves as an agreement between them. A negotiated brief describes the process where two companies with differing ideas come together to find a mutually agreeable solution. A formal brief contains only the most important details, aiming for brevity. A commission brief provides reasons for creating a video project and details around budget, deadlines, and rights. A tender brief allows contractors to share ideas for developing a product. A cooperative brief can be created and used by anyone, while a competition brief typically just requires basic contact information from entrants.