Questions about supported cloud storage.

Hi,

Where can I find a list of supported cloud storage services I can find except AWS and GoogleCloud Storage?

https://github.com/google/neuroglancer/blob/master/src/neuroglancer/datasource/file_protocols.md

Would it be possible to use Microsoft Box, Google Drive, or even file servers (Apache, nginx) on bare-metals or vm servers for production use? If yes, are there suggested authentication methods compatible with Neuroglancer?

Thank you,
-m