Stadia was always streamer friendly Cloud Gaming platform and of course, because its parent company Google is also the parent company of YouTube and happens that YouTube is on the road to be a front against Twitch and Facebook Gaming.
With this and probably being confirmed this week by Google itself, XDA DEvelopers discovered that Stadia gained new features.
The first one is the most beneficial as Stadia via Web browser can now EASILY help you stream without the help of OBS and also, it is NOT NEEDED to shutdown stream while switching games.
The second main improvement is the capacity of doing Party Stream, where you friends can see you playing within the Stadia platform itself and not necessarily on YouTube, with each party session supporting up to 10 players with emoji reactions.
If you have been tracking Stadia's Android app improvements in the past few weeks, you will recall this development already taking place on making Stadia more social.
Expect Google making this official anytime this week.
Via XDA