S3 is a common storage for us in IT. We use it for Amazon Lambda & Glacier, Backblaze B2, etc. While it’s more of a backend protocol, it’s incredibly common now that many things are mounted into buckets that used to be sftp, such as code for Amazon Lambda. There is an AWS SDK for .NET.
Really appreciate for the useful information.
We hope that it would be released near future. The current state is under beta-test.