State Restoration
Noun · Development
Definitions
The process of saving an application's UI state — such as scroll position, navigation stack, and in-progress form data — before the app is suspended or terminated, and reconstructing it on relaunch so the user returns exactly where they left off.
In plain English: Saving where you were in an app so that when you reopen it, everything looks exactly as you left it.
Example: "Without state restoration, killing the app loses the half-filled form — iOS users expect to pick up right where they stopped."