Nextcloud is awesome and indeed in use by quite a few companies in Germany at least. ISIS uses it because it is safer. Wouldn't necessarily use that example as

Nextcloud is awesome and indeed in use by quite a few companies in Germany at least. ISIS uses it because it is safer. Wouldn't necessarily use that example as an argument though. Some people also used OneDrive since many already had Office licenses, but it is just hilariously slow and your data would be a lot less safe from access.