Network Attached Storage (NAS) is a dedicated device or server connected to a network that provides centralized data storage and file sharing for multiple users and client devices. Unlike traditional external hard drives, NAS devices operate independently and can be accessed remotely over a network, making them ideal for data backup, collaboration, and media streaming. NAS systems often include features such as redundancy, user access controls, and integration with cloud services, enhancing both security and convenience. They are widely used in both home and business environments to ensure data availability, scalability, and efficient management.