The majority of Dropbox data hasn't been on S3 for at least 2 years now. See https://blogs.dropbox.com/tech/2016/03/magic-pocket-infrastructure/ https://blogs.d

The majority of Dropbox data hasn't been on S3 for at least 2 years now. See https://blogs.dropbox.com/tech/2016/03/magic-pocket-infrastructure/ https://blogs.dropbox.com/tech/2016/03/magic-pocket-infrastr...