Microsoft Software Developer interview questions

Microsoft recruitment team visited my university to screen resumes and select people to do a phone screen. Since I had an internal reeferal from a friend, they decided to skip the phone screen and I had an 1-on-1 on my university campus. I passed this first interview and they decided to book me a flight to do a on-site interview, which happened approximately 2 months after the first one. This second and final phase was much harder than the first one, I had 4 interviews with a 10-minutes break between each one. I received my offer right on spot, 10 to 15 minutes after my last interview.