upload a file to the cloud

HI,

I have a simple ios app. I just need to upload a file to some cloud and have it available so another user can download it. Can anyone recommend the easiest way to embed this in my app? I looked at dropbox and it wants each user to sign in dropbox and I don't want to do that. I also looked at amazon web services and it looks like overkill for what I want. Suggestions welcome.

thanks.