CERNBox is a cloud synchronization service designed for CERN users that allows easy file sharing and offline access to data stored in EOS, leveraging a capacity of 70 petabytes for physics data. With approximately 2,350 users and 20 million files stored, it integrates user environments with large data repositories and provides innovative features such as versioning and trash management. The platform has received positive feedback, showing significant growth and promising future use-cases, particularly for supporting large files and integrating with existing workflows.