I\'m trying to use the REST API in Skype for Business Online by following the instructions here: https://msdn.microsoft.com/EN-US/library/office/mt590891(v=office.16).aspx.
I'll try and answer as short as possible - I got this working. 1st issue - when you don't get "applications" in the result, you should have a "redirect" value instead. Keep following that and doing your GET against it (using the process of getting access tokens and adding the auth header) and eventually you should get the applications Url. 2nd issue - after you get your applications URL, you need to go get another access token and use the host name of the applications URL as the resource ID. Then you can post and create your app. Really hope this helps someone. :-)