S3 Files and the changing face of S3

Andy Warfield writes about the hard-won lessons dealing with data friction that lead to S3 Files

All Things Distributed
I cannot 100% confirm this, but I believe AWS insisted a lot in NOT using S3 as a file system. Why the change now?
They found a way to make money on it by putting a cache in front of it. Less load for them, better performance for you. Maybe you save money, maybe you dont.