Interview cancelled

I was scheduled for an interview at a certain multinational software company for Monday. I get home today, check my email and see that my interview has been cancelled. I don't know why, but I'm guessing that my interviewer has some more urgent issues to deal with. If this is the case, then I hope those issues get resolved ASAP and that everything works out. It could also be that they found their ideal candidate today. In this case, I'm happy for whoever got the job. I'm not upset by the cancellation, I'm just very confused.