The former Palermo striker made his switch yesterday, with Antonio Nocerino and Davide Lanzafame moving in the opposite direction.
"When I arrived in Italy eight years ago I had a dream - to play for a big team," Amauri said yesterday.
"It's true that Milan were also interested, but Juventus were my first choice. I never had any doubt since I first heard the Bianconeri wanted me.
"Furthermore I always said that I wanted to play in the Champions League and now I want to win the Scudetto. For me this is a personal victory."
Palermo sporting director Rino Foschi also stressed his satisfaction at completing the deal.
"They were difficult negotiations that started in silence and ended with great uproar," he explained. "In the end I am happy and I think that Amauri deserves to play for a great team like Juve.
"The transfers for Amauri and Nocerino are complete, but we are still sorting out the details for Davide Lanzafame - by July he will be a Palermo player.
"Everyone is happy with this deal - Palermo, Amauri and Juve."