The 27-year-old agreed a move to the Serie A giants and will sign a four-year deal when his contract expires at San Mames at the end of the season.
Llorente has revealed that he had many offers from a variety of European sides, but decided to join the Old Lady as they have the ambition that excites him.
"I had offers from many teams. But I really liked the Juve project," the Spain international told AS. "They have invested heavily in me from the start and have always been clear of their intentions.
"I've always enjoyed the competitive spirit of Italian teams, and for me, Juve are the biggest. The club are also trying to win the Champions League, which for me, is the title that is the most exciting.
"They are a winning team, with the ambition to keep on winning. It excites me a lot."
Llorente has earned 21 caps for Spain, scoring seven goals.