Inter Milan clinched their first Serie A title in 11 years after second-placed Atalanta drew 1-1 against Sassuolo.
Atalanta needed to win to push back Inter's celebrations after Antonio Conte's men beat Crotone 2-0 on Saturday.
Former Tottenham star Christian Eriksen fired in the opener for the Nerazzurri, before Arsenal target Achraf Hakimi sealed the victory in stoppage time.
Inter are 13 points clear at the top of the table having won 25 times and losing just two out of their 34 matches so far this season.
It is the club's first Scudetto since Jose Mourinho guided the side to a historic treble in 2010.
In doing so, they have ended Juventus' dominance in the Italian top-flight where they had won the Serie A title nine years in a row.
The Old Lady have suffered in the league this term, with Andrea Pirlo's men currently fifth, though they could climb as high as second if they beat Udinese by over four goals later on Sunday.
With 19 Serie A titles to their name, Inter have overtaken arch-rivals AC to become Italy's second most successful side.
Inter have led Serie A since beating Lazio 3-1 on February 14, with the club going one better than last term after they finished as runners-up.