When functions, procedures, calculations, or other processing methods are performed on a server, they are considered server-side. By contrast, client-side is on the user’s end. A good example of a script that executes on the server-side is a shopping cart or a search engine.
Some programming languages are designed for server-side processing are ASP, PHP, and Perl. See our server-side scripting definition for a full list and additional information.
Today, almost all websites and online applications utilize both server-side client-side processing.
Internet terms, JavaScript, Programming terms, Server-side scripting
Server-side processing is generally slower than client-side, so programmers prefer utilizing client-side programming whenever possible.