Server-side

Server-side refers to operations that are performed by the server in a client–server relationship in a computer network.

Typically, a server is a computer program, such as a web server, that runs on a remote server, reachable from a user's local computer or workstation.

Operations may be performed server-side because they require access to information or functionality that is not available on the client, or require typical behavior that is unreliable when it is done client-side.