Cloud storage allows users to save files on remote servers rather than local hard drives, making files accessible from any internet-connected device. This contrasts with local storage on a specific device. Popular cloud services like Google Drive, OneDrive, and Dropbox offer free basic storage with paid upgrades, and allow file sharing and online editing. While third-party storage raises some data protection questions, cloud storage provides convenience and collaboration benefits that make it widely used at the school by departments and teachers.