The interview process was simple. 2 interviewers, the first one gave a more general "design this system" problem (which ended being the problem that I worked on during my internship) and the second interviewer gave a coding question, which was somewhat easy. The first question ("design this system") is the more important of the two imo because it gives you a chance to show off what you know about the technologies you've been exposed to.

Got to their virtual onsite. One of the interviewers was not engaged in seeing my solution to the technical problem. We agreed on the algorithm before I went to actually code it, and he wasn't aware of what/how my code was doing things. I finished the coding he quickly looked at it and accepted the code. Rejected without feedback, I literally have no idea how to improve for next time, thanks for wasting my time in the interviews Microsoft!