Im working on a small project in my company where I'm using Outlook REST APIs. https://learn.microsoft.com/en-us/outlook/rest/get-started
So far so good.
The application is also registered in Microsoft Azure Active Directory. As explained here: https://learn.microsoft.com/en-us/graph/tutorials/angular?context=outlook%2Fcontext
Our application is permanently running and needs to get data every like 1 minute. This causes a lot of requests.
So are there any costs regarding Microsoft Api that I should know about. Or is the Calendar Api completely free. Didn't find any helpful information out there so far.
Thanks in advance for any help.