Secure Copy Protocol, commonly known as SCP, is a network protocol that allows for secure file transfers between hosts on a network. It uses SSH (Secure Shell) for data transfer and provides the same authentication and security as SSH, ensuring that files are transferred securely over potentially insecure networks. SCP is widely used for its simplicity and effectiveness in transferring files securely. It is particularly useful for system administrators and developers who need to move files between local and remote systems without exposing sensitive data to potential threats. Its straightforward command-line interface makes it accessible for users with varying levels of technical expertise.