In this test, I would find it useful if the administrator could also specify for the domain which storage providers are permitted at all. There is always the aspect of data protection laws. For example, retirement centers, retirement homes, medical practices, lawyers, etc. are only allowed to use certain services in their own country.
I imagine that you can generally say, are storage services allowed, yes or no. If yes, that you can select which ones are possible:
For example:
- OneDrive
- Dropbox
- Seafile
- Nextcloud
- Owncloud
With Seafile and Nextcloud/Owncloud, you could perhaps predefine the server details for the domain, which would be really great.