Cloud storage devices are online services that allow users to save and access their data over the internet. Instead of storing files on a local hard drive, users can upload documents, photos, and videos to remote servers managed by companies like Google Drive, Dropbox, or Microsoft OneDrive. This enables easy access from various devices, such as smartphones, tablets, and computers. These services often provide features like file sharing, automatic backups, and synchronization across devices. Users can choose from different storage plans, which may include free options with limited space or paid plans for larger storage needs. Cloud storage enhances data security and accessibility.