SSH, short for Secure Shell, is a network protocol that provides a secure way to access a remote computer. Developers commonly use SSH for securely accessing and managing servers.

SSH works by connecting a client to a server to manipulate the server's data and operating system by running commands on it. SSH uses public-key cryptography to authenticate the remote computer and to allow the remote computer to authenticate the user, if necessary.

SSH is widely used by network administrators for managing systems and applications remotely, allowing them to log into another computer over a network, execute commands, and move files from one computer to another.