The interview process consists of 5 to 6 individuals interviewing you during the course of a day. Generally, you interview with each person in their office. There is also an "As Appropriate (AA)" interview at the end of the day, if it looks like you may be a hire. The AA will have the final decision on whether you should be hired. You generally will not be told who the AA interviewer will be and it will not show up on your schedule. If it looks like you will not be a hire, then you will not be sent to the AA. At the end of each interview, the interviewer is supposed to write up how the interview went, pros & cons, and whether they give you a "Hire" or "No Hire". Generally, if they have doubts they are supposed to say "No Hire". Since each subsequent interviewer can read the prior interviewer(s) comments, it's important to do well on each interview. There are times when an interviewer will not be sure whether to give you a "Hire" or "No Hire" and will look at earlier interviewers to see their comments/opinions. So a "Hire" or "No Hire" rating can snow ball from the first person you interview through any or all subsequent interviews. Note also the AA may not be the hiring manger, i.e. may not be the person you will be directly working for, so it's important to know who the hiring manager is prior to your interview. Even though Microsoft is a casual work environment, interviewees are generally expected to dress up, e.g. suit & tie, for the interview.