Integrate calendars other than Outlook/Google

[AJungstand]

I am looking for an integration (synchronization, not just import) of my Zoom calendar with other calendars. Ideally it would be a bi-directional synchronization via webdav. Does anyone have a solution for this. Background: Neither Google nor Outlook fulfill the necessary data protection requirements and couldn't be used.
Many thanks in advance

[jrmagno]

This may help - first is enabling bi -directional sync. https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0058782

and here is the list of integration compatibility to zoom.

https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0066581

[AJungstand]

Many thanks for your help and sorry for coming back so late.
Nevertheless it's not the solution I'm looking for. All the offered integrations don't fulfill the necessary data protection requirements. A webdav based solution would work, like many other calendars providing. For me the most important point is the integration in my mail client (Thunderbird) and/or my cloud services (Nextcloud).

Best regards, AJ

[AJungstand]

Unfortunately, no further ideas have been given. If you follow jrmango's suggestion, only Office365, Exchange and Google Calendar will continue to be offered. It is a great pity that Zoom does not offer support for standard calendar protocols (webcal; ical). Or have I overlooked something here?

For me, this may mean looking for a video conferencing tool that works with common standards for calendar integration.