--- id: installation title: Datadog RUM Installation sidebar_label: Installation description: Adding Datadog Real User Monitoring (RUM) to Your App --- Datadog Real User Monitoring (RUM) allows you to visualize and analyze the real-time performance and user journeys of your application's individual users. This is an option to profile and monitor the user experience of your Backstage installation. There is a basic [Datadog RUM](https://docs.datadoghq.com/real_user_monitoring/) integration built into Backstage. You can enable it by adding the following to your `app-config.yaml`: ```yaml app: datadogRum: clientToken: '123456789' applicationId: qwerty # site: datadoghq.eu # env: 'staging' # sessionSampleRate: 100 # sessionReplaySampleRate: 0 ``` If your [`app-config.yaml`](https://github.com/backstage/backstage/blob/e0506af8fc54074a160fb91c83d6cae8172d3bb3/app-config.yaml#L5) file does not have this configuration, you may have to adjust your [`packages/app/public/index.html`](https://github.com/backstage/backstage/blob/e0506af8fc54074a160fb91c83d6cae8172d3bb3/packages/app/public/index.html#L69) to include the Datadog RUM `init()` section manually. Please note that the env value MUST be specified at build time :::note In case after a proper configuration, the events still are not being captured: Copy and paste this section in to your `packages/app/public/index.html` under the `` tag. ```html <% if (config.has('app.datadogRum')) { %> <% } %> ``` The `clientToken` and `applicationId` are generated from the Datadog RUM page following [these instructions](https://docs.datadoghq.com/real_user_monitoring/browser/). There are two optional arguments: - `site`: The Datadog site of your organization; defaults to `datadoghq.com` - `env`: The application environment for Datadog events (no default)