It’s a combination of VST connect and Teamviewer. I am a producer and do remote production sessions with a person that is both a vocalist, guitarist and songwriter. He starts up his own Cubase with the whole production and he activates VST Connect. I run VST Connect Performer just for communication and to play him harmony guides and so on. We also run Teamviewer which allows me to control his computer. The result is that I can work as if I was in his studio doing recording sessions.
Since it’s all done on his computer he can then continue working on the song until the next session and we don’t have to send any files back and forth.