Microsoft

Applied online and had an on-campus interview. The interview was about 40 minutes, focusing on my background. I was asked one main question with related sub-questions.

Phone interview and then they fly you out to Redmond where there's four round of interviews. The first round is pretty easy - just brain teasers and so on. If you do well on that you get to the hard part - the 4 round interviews.

Had a phone screening and then completed two technical interviews back-to-back. They were super friendly and understanding. During the phone interview, they asked me about why I was interested in Microsoft and about their products.