Yah exactly -- you can seed the file yourself but just have this as a backup in case your PC/laptop/whatever is turned off. Slower, but at least its there. Once it is seeded beyond a couple initial users it's a moot point anyway.
Doubt that AWS is trying super hard to get into the torrent sphere, its just +1 cool thing they support.
Doubt that AWS is trying super hard to get into the torrent sphere, its just +1 cool thing they support.