The Campeonato Brasileiro Série B is the second tier of professional football in Brazil. It features clubs that compete for promotion to the top division, known as the Campeonato Brasileiro Série A. The league typically consists of 20 teams, and the season runs from May to November. Each team plays 38 matches, facing every other team twice, once at home and once away. The top four teams at the end of the season earn promotion to Série A, while the bottom four teams are relegated to Campeonato Brasileiro Série C. This structure creates a competitive environment for clubs striving for success.