Hi all,

our company development area has created an application shared calendar that actually access to our Exchange 2013 with a user that has full access permissions to everyones calendar,, so when we create a new meeting from this application and we add some of us as attendees automatically a copy of appointment is added to their calendar.

now we are migrating to O365 and we would likw to know if is possible do the same thing without use an additional O365 license and how in case.

I heard about Application ID token, can be a solution?

any help is appreciated,

many thanks

Daniele

You should not need an additional license for an app. It sounds like you're using impersonation with EWS?