Which cloud storage feature allows users to access local copies of their files offline?

The feature that allows users to access local copies of their files offline is file synchronization. Through file synchronization, a cloud storage service automatically keeps local copies of files updated and in sync with their online versions. This means that any changes made to files locally are reflected in the cloud and vice versa.

When users are offline, they can still work on these local copies without needing an internet connection. Once the device reconnects to the internet, the changes made offline will be uploaded automatically, ensuring that the most recent version of the files is accessible in the cloud.

This capability is essential for maintaining productivity in situations where internet access may be unreliable or unavailable. In contrast, features like file versioning focus on tracking and managing different versions of files, real-time collaboration emphasizes multi-user editing capabilities, and cloud backup serves primarily to create copies of data for disaster recovery, without necessarily allowing for offline access.