Microsoft came on my campus and I got a phone interview through that. The phone interview was 45min and was mostly to see how much I knew about Microsoft, the tech industry, and a few behavioral questions. About a week after that I was told I was invited to a Microsoft interview day in Seattle. There was a networking event the night before the interview, and the interview day consisted of 4 1on1 interviews for 1 hour each. They will be communicating with each other during the interviews and will ask you things that the others forgot. My questions were mostly behavioral and experience related, but I did get a few technical and design questions. I waited for an hour after the interviews in the lobby and was offered the job!