The Welsh midfielder - who left the Gunners after 11 years last summer - admitted he couldn't turn down the chance to join Juventus, and he departed on a free transfer.
He told Foot Truck: "Juventus is a massive club, one of the top teams around in the world so when they come calling for you it's hard for you to turn them down.
"I was in a position where I was at a club for a very long time and I fancied a change to get out of my comfort zone to learn a new language, hopefully very slowly."
The Italian side had won eight Serie A titles in a row when Ramsey made the move, and they have reached the Champions League final twice in the last five campaigns.
Asked about leaving England, he said: "Again to test myself in a different league and all the cup competitions we're still in.
"We're a top team and hopefully we can go far in many things and win many trophies and titles here.
"When you come here you get the feeling of how important it is to win.
"When you change the club you arrive at some point in your career where you just want to win trophies.
"It's good being part of a young project of hopes for the future."