We're looking to setup a proof of concept Skype for Business 2015 Server.
We don't want to connect to the outside world just internal. We want to setup IM, video, and Persistent chat. We don't want to connect to Exchange at this point.
What type of setup would we need? Can we run all those things off of one VM?
Also, are there any things we would need to do to back out after the pilot?