Why single out Amazon? You should have the same concerns with any provider. If you lose sleep because you are unsure of your provider then the only option is

Why single out Amazon? You should have the same concerns with any provider. If you lose sleep because you are unsure of your provider then the only option is to host/manage/backup yourself. Regardless of who hosts it there will be human error and technical glitches. It isn’t about if something will happen it is when. Design in such a way as to minimize recovery time and effort. Plan for failure.