Microsoft Software Engineer interview questions

A recruiter reached out to me on LinkedIn. From there, we scheduled a technical phone interview. There were three questions that were increasing in difficulty. There was no virtual whiteboard so I had to explain how I would approach the problem and speak to time/space trade offs. At the end of the phone interview, the interviewer informed me that they would like to fly me out for an on-site interview. The on-site process was straight forward. There were a total of 5 interviews (I'm told if you don't do well in the first few, they dismiss you after lunch). The first 4 interviews begin with a coding problem, and if there's time left over, you have the opportunity to ask the interviewer any questions you want. The lunch interview involves some casual conversation to get to know you a little better followed by a short coding problem. The final interview was a system design question followed by some behavioral questions. After the on-site interview, I was contacted within a week with news that they were moving forward with an offer.