On the Creators Update, Windows 10 now integrates Beam, which is a live streaming service from Microsoft, similar to Twitch and YouTube Gaming, that gives you the ability to stream or watch someone else play your favorite games in real-time.
Use the Windows key + G keyboard shortcut to open the GameBar.
Click the Beam stream icon on GameBar.
Choose to enable the camera, microphone, and where the broadcast overlay appears.
Click Start broadcast to complete the task.
Once you completed the steps, you will be instantly streaming your favorite game live on Beam.
You can access even more settings, doing the following:
Click on Gaming.
Click on Broadcasting.
In the section, you can change audio settings and quality. You can choose to have your microphone enabled and use echo cancellation, and there are controls to set the mic and system volume while broadcasting.
This page also allows you to enable camera or capture mouse course during a broadcast.
If you can’t find Beam on Windows 10, it’s probably because you’re not running the Windows 10 Creators Update. If you’re an Insider, you can use this feature starting build 15031 and later.