Multiple stages. Last stage included a full loop with multiple interviewers. Questions seemed reasonable. If you do well but are not considered to be a diverse candidate, be prepared for a potential multi-month wait time to receive an offer. Microsoft is dedicated to building a diverse workforce and as such will wait as long as necessary in some cases to ensure a diverse talent pool has been considered for any given position. If a diverse candidate is interviewed with equal or better results than a non-diverse candidate, you can expect the diverse candidate to be extended an offer.

Phone Screen done for teams, easy Data Structures questions, and scenario based on what DS to use when. Also got a scenario of designing a hashing algorithm for partitioning purposes, which talks about different ways of solving it, and how to implement that using Hashmaps.