After beginning his managerial career in 2003 with several smaller Italian sides, Allegri helped Sassuolo gain promotion to the Serie B for the first time in their history, winning the Serie C1 championship and Super Cup in the same year. From 2008 to 2010, he coached Cagliari in Serie A, leading them to their best Serie A finish in almost 15 years. His performances as head coach of Cagliari earned him a move to AC Milan in 2010, where he remained until January 2014; he won a "Scudetto" in 2010–11, Milan's first since 2004, and a Supercoppa Italiana title in 2011. Between 2014 and 2019, Allegri was in charge of Juventus, with whom he won eleven trophies: five consecutive league titles (from 2015 to 2019), four Coppa Italia titles in a row (from 2015 to 2018) and two Supercoppa Italiana titles (2015 and 2018); he also reached two UEFA Champions League finals (2015 and 2017). He returned to Juventus in 2021, following two years away from management.