What technology is used in Windows for file backup?

File History is a feature in Windows that specifically focuses on backing up user files. It automatically saves copies of files from designated libraries, desktop, favorites, and contacts folders, allowing users to recover versions of files if they are accidentally deleted or modified. This functionality is designed to run in the background, making it user-friendly and efficient for regular backups.

Unlike the other options, File History is dedicated to ensuring that personal data is secure and recoverable over time. Other methods mentioned serve different purposes: System Restore focuses on the operating system and software configurations rather than user data, while Disk Cleanup is intended to free up space on a hard drive by removing temporary files and system caches. The Backup Wizard may help perform backups in some contexts but is not the primary tool recognized for file backup in modern Windows systems. Hence, File History is recognized as the correct and relevant technology for file backup in Windows.