Notification Center and Widgets
macOS Big Sur changes up its widget game a bit, and although you can’t drop widgets on your desktop — in this regard, it’s more like the iPad than the iPhone — you can now use multiple widget sizes and organize them in much the same way on macOS as you can on iPadOS.
Notifications are also now grouped right above the widgets, eliminating the two-pane view of the old Notification Center, which now simply floats out from the right-hand side of the screen, hovering above your desktop, rather than blocking it out. Notifications can also be even more interactive than before, and will group up and stack up just like they do on the iPhone and iPad.