Serie B is the second-highest professional football league in Italy, positioned below Serie A. It features a competitive format where teams compete for promotion to the top tier, with the best-performing clubs earning a chance to move up. The league consists of 20 teams that play each other in a round-robin format, with each team playing 38 matches in a season. The bottom teams face relegation to Serie C, while the top teams aim for promotion, making Serie B an exciting and crucial part of the Italian football system.