This page describes how JavaScript Agent injection works, including the different injection types.

To instrument your application for Browser RUM, you must configure your JavaScript Agent and insert it into the page that is returned to the end user as part of the normal process it follows. The act of inserting the agent is called injection. There are several ways to inject the JavaScript Agent for Browser RUM into your web pages. You also have several JavaScript hosting options to choose from that offer differing degrees of control, simplicity, and reliability.

To configure the JavaScript Agent, see Configure the JavaScript Agent.