Synology C2 is a platform offered by Synology that facilitates secure storage and backup of data in the cloud. Synology C2 is designed to integrate with Synology NAS devices, providing users with an additional option for off-site data backup. Users can access and utilize the service through web browsers, enabling them to store and back up their data remotely. The platform operates on a subscription-based model, offering individuals and businesses a cloud storage solution for their data management needs.