It should make you cautious and curious. A few years ago I accepted an offer from a large company who announced massive layoffs in the near future. I contacted

It should make you cautious and curious. A few years ago I accepted an offer from a large company who announced massive layoffs in the near future. I contacted my recruiter and asked if this affected my offer and they said no. I later pushed them for more details about who I would report to, if I could speak with a member of the team, what I should do to prepare, and what I would work on. They were very closed about all this and hard to contact. Eventually I found out the entire department was gone and I was going to work on mobile apps and web pages instead of highly scalable backend infrastructure and distributed databases. I also found out they had intentionally hid this from me, so I immediately told them I would not join the company. I don't share this to scare you or suggest Microsoft would do the same, but understand that you are entitled to have your questions about your standing with the company answered. Pay attention to who they let go, and question how well that bodes for your goals at the company. If they can't or won't help you understand this, understand the risk you're taking. As I've said elsewhere in this thread, layoffs can be a sign the company is doing what it needs to for the future if it's done correctly.