Having won two Premier League titles, the Champions League, the FA Cup, two League Cups and the Club World Cup while at Anfield, Robertson arrives with bags of experience that will only help manager Roberto De Zerbi.
Robertson made 378 appearances across nine years at Liverpool, providing 69 assists from left back. The Scottish star is currently preparing for the World Cup in America ahead of the country’s first clash with Haiti.
Speaking on the signing, De Zerbi revealed how happy he is to bring in the 32-year-old in what is a huge boost to the side at both ends of the pitch.
"Andy is someone I've admired for a number of years, and he will bring outstanding technical qualities, experience, leadership and mentality to our team.
"He is a proven winner at the highest level over a long period and is someone who can be a big player for us, both on and off the pitch.
"I can't wait to start working with him and seeing the positive impact he will have on everyone around him."
Reports claim that Spurs saw off a late approach from Italian giants Juventus before Robertson put pen to paper. The club are also chasing fellow defender Jan Paul van Hecke but have had their first bid for the Brighton star rejected.