In my case it wasn't MSFT,but still one of the largest companies in the sector we were operating in. We went from 500 people scattered around major cities in Eu

In my case it wasn't MSFT,but still one of the largest companies in the sector we were operating in. We went from 500 people scattered around major cities in Europe to 5000 people and managed by the Americans. It was quite a change, to say the least, and as it often happens, everybody got told nothing would change.I was having a hard time to believe it. We went from Swiss management to American management. The cultural differences are huge. For instance,the Swiss,no matter how high up in the food chain, would pop in to our London office and handshake with every single person in the office. The Americans never spoke to anyone but the local managing director. The Swiss were casual, somewhat even relaxed,the Americans made it understand they own the place and were ready to squeeze even a stone if that'd make extra money. The comp was shit in both companies,so hardly any changes there. The tech side was much more superior at the mothership,so migrations were needed. What was supposed to be a quick, one month job,turned into half a year nightmare with no good result afterall. The worst part was weekly corporate emails with so much jargon and corporate bs that it was even difficult to read or make sense of it. I quit shortly after the acquisition and would do the same in any other company if I would find out thet it's being acquired.