They now head into a weekend match with Crotone knowing that a win will guarantee the league title with a game to spare, before they turn their attention towards the Champions League final with Real Madrid on June 3.
Alves, who scored one goal and set up two more as Juve beat Monaco to reach Cardiff, then extended his hot streak with a close-range finish from Alex Sandro's cross.
Gonzalo Higuain and strike partner Paulo Dybala missed a number of chances to break the deadlock before Dani Alves side-footed a volley into the corner to break the deadlock.
We made up for the poor showing we had on Sunday [against Roma].
"Lately, we've conceded a little more than we usually do in terms of our defence, although over the course of a season these things can happen", said Juve defender Leonardo Bonucci.
"This is a huge game for us", he told a pre-match news conference before contesting the final on home turf at the Stadio Olimpico. Likewise, Lazio have also shown the exit doors to Inter Milan and Roma to meet Juventus in the title-decider.
The Stadio Olimpico clash started well as Keita Balde almost gave Lazio a seventh-minute lead.
May 17, 2017 at 22:00, will be the final match in the Italian Cup, in which at the Juventus stadium in Turin, the football club Juventus as the nominal owner will play against Lazio.
The Juve stopper was in action again not long after as Anderson's cross found Immobile at the back post, but Neto made a reaction save to keep the header out - with goal line technology confirming the ball did not make it over the line - before Keita smashed the rebound into the side netting.
There is a chance of winning Treble in next 20 days in front of Juventus.
Juve lift the Italian Cup.
Juventus will try to become the first club to win the Coppa Italia in three consecutive years and add to their record 11 victories in the competition all-time.