세리에 B is the second tier of professional football in 이탈리아. It features clubs that compete for promotion to 세리에 A, the top division. The league consists of 20 teams, and each season, the best-performing teams earn the chance to move up. The competition operates on a system of promotion and relegation. The bottom teams in 세리에 B are relegated to 세리에 C, while the top teams from 세리에 C are promoted. This structure keeps the league dynamic and competitive, allowing for new teams to rise and others to face challenges each season.