The iPad Dock is a handy place to store frequently-used or recently-viewed apps so you do not have to browse multiple screens or folders for a particular app Find. You can also use it to simplify multitasking by opening two or more apps in Slide Over or Split View mode.
The dock was first introduced with iOS 11 and has some new tricks on iPadOS. The process of adding and rearranging symbols is different. And now you can paint the dock with a darker background by activating the dark mode. How to use the dock on your iPad.