I came to the reception and no one seemed to be ready for my interview. Then out of nowhere a woman appeared ready to interview me. We sat down in a cafeteria.
It was a 1 hour long interview where my internship mentor asked me a lot of question about me and about imaginary situations and how I would solve them.
Aptitude , 3 rounds of face to face, I did not get selected, pretty difficult as they selected only 3 people out of 120 eligible students. No further information was given.
Applied online - after a while was sent an email with a link to an online test. Similar to an IQ test. Passing that, two phone screens by a recruiter, mostly behavioural. Passing that, one hour-long in-person interview, mostly technical, with some behaviour stuff. Generally pretty easy.