Cloud storage refers to the storage of data on remote servers accessible via the internet. This allows users to store and access their data from any device with an internet connection, without the need for physical storage devices like hard drives or USB drives. Cloud storage providers typically offer services such as file storage, backup, and synchronization, with data stored in redundant, secure data centers to ensure data availability and protection. Cloud storage has become increasingly popular in recent years due to its convenience, scalability, and cost-effectiveness compared to traditional on-premises storage solutions.