[bob1029]

Obscurity can be fantastic.

One of my favorite patterns for sending large files around is to drop them in a public blob storage bucket with a type 4 guid as the name. No consumer needs to authenticate or sign in. They just need to know the resource name. After a period of time the files can be automatically expired to minimize the impact of URL sharing/stealing.

[genewitch]

Wouldn't the blob storage host be able to see your obscure file?

I suppose if it's encrypted, no. Like the pastebin service I run, it's encrypted at rest. It doesn't even touch disks, so I mean, that's a decent answer to mine own question.