Got the interview after meeting with Amazon's representatives at a career fair at my university. The representative at the booth asked me some technical questions about what I would do to scale a large system. Next, I was emailed an offer for an interview for a summer internship. I met with two interviewers about one week later. The first interview asked questions about some of my side projects, and I was asked to solve a few problems on a piece of paper: convert a relative path to an absolute path in linear time. I then met with another interviewer who was an alum of my university, and she asked me how I liked a few classes I was taking that she also took as a student. She asked a question about finding all of the non-concentric palindromes in a string. I came up with a bad n^3 solution, and she mentioned that it was possible in linear time. Our interview came to a close, and about an hour later, I realized the solution and emailed it to her. Got an offer about one week later! Really fun summer internship.
