Google is rolling out a per-app backup feature for Pixel devices, allowing users to control which specific apps are backed up to the cloud. This feature can be accessed through Settings > Accounts and backup > Google Backup > Other device data, where users can see the top three apps consuming space and toggle backups on or off for each app. Users can also view the backup size for each app and manage apps that currently have no data backed up. This update aims to give users clearer visibility and control over their Google cloud storage.