It really boils down to the fact that Amazon seems to be offering you a better chance to do something more "meaningful", while at Apple you will be working on a

It really boils down to the fact that Amazon seems to be offering you a better chance to do something more "meaningful", while at Apple you will be working on an internal too and in a team that, in my opinion is not as interesting. Take that with a grain of salt since I don't really know what kind of development goes on on that group in Apple.