Had a short screening interview with a recruiter that progressed quickly (within a couple of days) to the formal interview process. It was a pretty typical, straight forward process. There were four rounds that included a program manager, HR business representative, segment director and finally the segment general manager interview. None were what I would call "difficult", especially if you have the experience they're really looking for. The interviews were cordial, comfortable and felt more like a conversation than an inquisition as they sometimes can feel like. The biggest take away I can give here is you absolutely need to be prepared to ask questions of your interviewer, and not junk questions. Show that you've done your research and get your interviewer to have to actually think about their answer before giving it.