The Bianconeri needed to start the Champions League strong after just one point from three Serie A rounds, and got the result they wanted in Sweden.
Alex Sandro nodded in the opener, Dybala converted a penalty even while slipping on the spot and Alvaro Morata rounded out the scoreline.
Elsewhere in their group, Chelsea squeezed past Zenit St Petersburg 1-0 thanks to Romelu Lukaku.
“We knew that our recent results and performances weren’t good, but this was a different competition and we knew what we had to do,” La Joya told Sport Mediaset.
“We did it with calm, as a big team, and got the result we needed. Now we need to keep going along this path.”
Dybala had not scored in the Champions League for 10 months, since November 2020.
“I didn’t know that! I am happy to score, it helps my confidence, so I can play in more relaxed fashion and help the team.”
Vice-President Pavel Nedved said before kick-off that Dybala is at the centre of the Juventus project, but he hasn’t yet signed a new contract, his current deal expiring in June 2022.
“I always try to give my all. The parties are talking, we are all on the same page and hope to reach a happy conclusion.”