Client vs. Server

Most web application consist of two parts. The client contains the user interface, that is, buttons and selectors and text boxes and other things that the user can interact with. The server (or backend) is where computation happens, including things like manipulating data and running models.

Shown on the right is a web application that estimates your blood alcohol concentration (BAC) based on both your physical characteristics and the number of drinks you have had. Play around with the application!

When you are ready, identify the action that takes place on the server side.