Xbox Game Pass June 2021 added and removed titles are starting to be detailed by Microsoft for console, PC and Android Cloud Streaming.
Those subscribed to Xbox Game Pass Ultimate have access to both, console and PC libraries alongside access to the EA Play Vault as well. We’ve also included...
I want to say it's one to one, but in all honesty I'm a bit fuzzy there. I can recommend JoyFreak's sister site AdminIntel - Admin & Webmaster Resource where there are lots for people of varying degrees of expertise with development, you likely can get a far more precise answer there!