I found this post to be very clear about it as for an actual AD integration I think it is not available yet but I hope it is not far away especially since there is now an AAD pack which I think demonstrates the connectivity to AAD.
I think it is also possible to connect to on premise AD (it's in the list of available data sources and I see tons of table after connecting to it) but then I don't know AD enough to know which table to use.