Applied through school's career website - got a call for first round of interview within a couple of days.
First round = Phone Interview (Technical +Behavioural) - 20 minutes
(Cleared the phone interview, next was Super-day)
Super-day= Visited their NYC Office, Madison Avenue, had 3 sets of personal interviews with 6 people in all - 20 minutes each ( Pure technical Interview)
Got a call within 2 days offering me the internship.
Tips: Make sure you know your resume well and what you are getting yourself into, have a good hold on your story and be confident.