There is a util for client-side sync of Outlook caldav to nextcloud, details are described here;
This will work great as long as you have Outlook installed. But this does not work for all of our users, for example, i don’t have Windows or Outlook on my system. Also, im assuming you must have outlook running.
I would like an app that can do server side app for caldav data. I would like to remove the dependency on Outlook and query the server directly, in our case these are Exchange servers, so query ews: https://msdn.microsoft.com/en-us/library/office/dd877012(v=exchg.150).aspx
As i’m asking here, it could be a nextcloud market app. Would it be hard to create something like this? I think i’m willing to offer a bounty or such for the development as i think this clould be much wanted as most of our clients use Exchange.
I also asked the makers, to do it (but not as a nextcloud app);