Configuring the CloudWatch RUM web client

Your applications can use one of the code snippets generated by CloudWatch RUM to install the CloudWatch RUM web client. The generated snippets support two installation methods: as a JavaScript module through NPM, or from a content delivery network (CDN). For best performance, we recommend using the NPM installation method. For more information about using this method, see Installing as a JavaScript Module.

If you use the CDN installation option, ad blockers might block the default CDN provided by CloudWatch RUM. This disables application monitoring for users who have ad blockers installed. Because of this, we recommend that you use the default CDN only for initial onboarding with CloudWatch RUM. For more information about the ways to mitigate this issue, see Instrument the application.

The code snippet sits in the tag of an HTML file and installs the web client by downloading the web client, and then configuring the web client for the application it is monitoring. The snippet is a self-executing function which looks similar to the following. In this example, the body of the snippet's function has been omitted for readability.