Which iOS feature enables users to create backups of their device settings and data?

iCloud Backup is the feature that allows users to create backups of their device settings and data effortlessly. When iCloud Backup is enabled, the device automatically backs up data such as photos, accounts, documents, and settings over Wi-Fi to the iCloud service. This provides a seamless way for users to recover their information if they lose their device or need to set up a new one.

By using iCloud Backup, users don't have to manually back up their data with a computer, which is often required with other methods, such as iTunes Sync. While iTunes can sync certain data and files to a computer, it does not provide the comprehensive backup solution that iCloud offers. Time Machine is a feature specific to macOS for backing up Mac computers and does not apply to iOS devices, and iOS Restore refers to the process of retrieving and reinstalling a backup but does not create backups itself. Thus, iCloud Backup stands out as the most suitable choice for backing up device settings and data on iOS devices.