SharePlay allows you to share your screen, movies, and music with FaceTime users.
Focus mode allows you to silence notifications based on time of day.
Quick note allows you to take notes from any screen.
Universal control feature allows you to use a single mouse and keyboard on both Mac and iPad.
You can also drag and drop files between devices.
Universal control also works with more than 2 devices.
AirPlay to Mac can be used to share iPhone and iPad screen to Mac.
Shortcuts app support comes to macOS Monterey.
You can also record your shortcuts to run a specific set of actions.
Safari tab groups can be used to group similar tabs together.
You can also save tab groups to access later and access them across your devices.
Tab groups can also be shared via messages and Mail.