This document discusses different types of briefs used in competitions and between companies. A competition brief informs competitors of rules and how to enter a competition. It is more intense than other briefs as it directly addresses audiences from the beginning. A contractual brief is a legal agreement between a company and client detailing work requirements and payments. A negotiated brief involves two parties reaching agreement on ideas when they initially disagree. A tender brief involves companies providing estimated costs and work descriptions for a client to consider.