Microsoft

The interviewer seemed particularly disinterested, almost as if they had already chosen another candidate. This wasn't about technical difficulty, but poor communication. Some phrases were certainly avoidable, like "too many people applied for this

5 rounds, very intense. But very interesting to learn the process. Interviewers are helpful. You can ask questions, and each round lasts for 1 hour. Usually, it takes less than a month to finish up all rounds. Very cooperative HR.

Slow or minimal feedback after the interview. You have to push for feedback or wait. In my case, I waited for two weeks, then pushed the recruiter for feedback.