Extensive. Goldman Sachs first conducted a Skype Coffee chat where they answered questions that I had for the division. I applied for the position through my career center and on the GS internship website. I received an invitation for a HireVue interview a few weeks later, where they asked a bevy of questions, mostly fit and two easy (and random) technical. After the HireVue I was invited to fly out to SLC for Superday, where I interviewed with 12 different people. The total interview process was about three hours.