It’s for an event Interview. First step was online tech screening. It ranges from easy to medium difficulty problems. You might be asked to write an algorithm or find bugs and provide fixes or write possible test cases. I had three such problems. One Straight forward coding problem. One to find bugs and provide fixes. One data structure implementation(medium difficulty). Then onsite interview with 4 rounds. Pretty straight forward white board coding questions. First round scenario based problems. Second round implementing a data structure. Third round scenario based problem. Fourth is hard difficulty problem. Leetcode is the best source for MSFT interviews. I would say expect Atleast two rounds out of leetcode but one should be able to solve it if practiced enough. I got three problems outside of leetcode. Got call from the recruiting manager the next business day and discussed the offer. Super quick turn around from them!!