add netflow detail; installing-the-d42-netflow-

Author: Nadia-JSch

docs/getstarted/installation/installing-the-d42-netflow-collector-as-a-service.mdx

@@ -3,7 +3,11 @@ title: "Device42 NetFlow Collector - Installation"
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-The [Device42 NetFlow collector](https://www.device42.com/autodiscovery/) is a self-contained, portable utility that collects NetFlow data, analyzes it, and sends it to your Device42 instance to enhance application dependency mapping discovery. The data Device42 gets from NetFlow is used to augment data gathered via Device42’s other autodiscovery methods (for example, SNMP, WMI or WinRM for Windows, SSH for Linux), producing a comprehensive map of your infrastructure including accurate details and important inter-relationships without the need to configure expensive span or mirror ports!
+The [Device42 NetFlow collector](https://www.device42.com/autodiscovery/) is a self-contained, portable utility that collects NetFlow data, analyzes it, and sends it to your Device42 instance to enhance [Application Dependency Mapping (ADM)](apps/enterprise-application-dependency-mapping/index.mdx) discovery. 
+
+Installing the Netflow collector is optional but recommended if connections in your application are short-lived and not captured effectively within the [**ADM sampling Interval**](/apps/enterprise-application-dependency-mapping/configure-application-dependency-mapping.mdx).
+
+The data Device42 gets from NetFlow is used to augment data gathered via Device42’s other autodiscovery methods (for example, SNMP, WMI or WinRM for Windows, SSH for Linux), producing a comprehensive map of your infrastructure including accurate details and important inter-relationships without the need to configure expensive span or mirror ports!
 
 :::note
 Device42 Remote Collectors (RCs) include built-in NetFlow Collector functionality. Device42 recommends using the RC NetFlow Collector rather than the standalone collector if possible in your environment. For more information about the RC NetFlow Collector, see [NetFlow Collector](auto-discovery/netflow-collector.mdx).