Federation between Teams and "pure on-premise" Skype for Business
Currently we are using federation with Teams with a bunch of domains. However, when a federated domain is "pure on-premise" (no hybrid set up for that particular domain), federation is not working. according to Microsoft Support, this is "by design". This in my mind is "poor" design and should be addressed asap.
We are facing similar situation with our few customer domains and this needs to be addressed quickly.
This is more than poor - this is a deadlock!