Only Apple could deliver Universal Control

Apple’s Universal Control lets you use a single keyboard, mouse, and trackpad between your Mac and iPad. Use the keyboard, mouse, and trackpad of your Mac to control up to two other nearby Macs or iPads, working seamlessly between them.
When using Universal Control (beta), each device shows its own screen and apps, but you can use a single keyboard, mouse, or trackpad to move the cursor, type, and even copy content between them.
Sam Byford for The Verge:You’ve been able to use iPads