Does this mean the minimum domain functional level needs to be at or above 2008 R2, or just that we have to have servers at that level? I assume this means functional level, but wanted to confirm that.
We are in the process of upgrading our functional level to 2016, but that will be about 3-5 months out. We want to roll out Conditional Access before that and are hoping this won't hold us up.
I apologize if this seems like a low level question. I have set up Hybrid Join in the past, but this is the first time I have run into an environment with this specific scenario.