Juve, who have now lost in their last five European Cup finals, missed the chance of doing the treble after their league and domestic cup triumphs and Allegri admitted their performance dropped off against illustrious opponents.
But on 61 minutes, Casemiro’s 25-yard shot was deflected past Gianlugi Buffon by Sami Khedira, and Real Madrid regained the lead out of the blue.
Ronaldo again highlighted a change to his approach in training and a greater willingness to be rested as a key factor in his strong end to the season.
Real produced a ruthless second-half display after an evenly matched first 45 minutes.
“The root cause of this was panic, to understand what triggered it we will have to wait a while”, said top local official Renato Saccone, the prefect of Turin.
In the past 12 months Ronaldo has won two Champions League titles, the European Championship with Portugal, claimed a Spanish league title and the World Club Cup and on an individual level been awarded the Ballon d’Or and FIFA’s “Best” award.
“If you had told me that I would have won all of this as a coach, I wouldn’t have believed it”, Zidane said.
Making a perfectly-timed run to the near post, he met Luka Modric’s cross with an ice-cool finish that ensured Madrid would become the first team since AC Milan 27 years ago to win back to back European Cups.
Juventus conceded more goals on the night than it had on the journey to the final, having let in only three in the previous three games.
“The first half was hard, but in the second we were quickly superior”.
Dani Carvajal created the opening with a crisp pass to Ronaldo on the edge of the box, with the Portuguese wizard wasting no time in firing past Gianluigi Buffon with the help of deflection.
Juve centre back Leonardo Bonucci drove a long diagonal ball which Alex Sandro reached and cushioned back across the box.
Some might suggest it’s pretty easy to manage a Real Madrid team including Ronaldo and a host of other superstars, but others have proven that’s not always the case.
The 32-year-old finished the competition with 12 goals, one clear of the Argentine who has 11 goals after Barcelona crashed out of the tournament in the quarter-final against Juventus.
“They showed their class and the attitude needed to play in this kind of game”.
This time, Zidane was a spectator on the Madrid sidelines, but enjoying it just as much.