TidBits has a good explanation, as is usual for them.

In addition to iOS 13 features like improved text editing, Sign in with Apple, enhanced Maps, and redesigned photo editing, iPadOS improves the multitasking system, beefs up Safari to support complex Web apps, adapts the Home screen for the larger iPad screens, improves markup features, and adds a new one-handed floating keyboard.

Head over to the TidBits article for a full explanation »

More from ComputerWorld