Final answer:
To track user behavior on a website, you must add a JavaScript tracking code from an analytics service to each page, enabling the collection of data on user interactions.
Step-by-step explanation:
To track user behavior on your website, you must add a specific code snippet, such as a JavaScript tracking code, to each page of your site. This code is typically provided by an analytics service like G Analytics. Once implemented, the analytics service can collect data on how users interact with your website, including page views, click paths, and other actions. This information is then processed, and the resulting data can be accessed via the analytics platform's dashboard, helping you understand visitor behavior and improve your website's user experience.