Split up setup requirements into sections for readability

content/en/network_monitoring/performance/setup.md

@@ -16,6 +16,13 @@ further_reading:
       text: 'Network Widget'
 ---
 
+Datadog Network Performance Monitoring (NPM) is designed to give you visibility into your network traffic between services, containers, availability zones, and any other tag in Datadog so you can: 
+
+- Pinpoint unexpected or latent service dependencies
+- Optimize costly cross-regional or multi-cloud communication
+- Identify outages of cloud provider regions and third-party tools
+- Troubleshoot faulty service discovery with DNS server metrics 
+
 Network performance monitoring requires [Datadog Agent v6.14+][1].
 
 ## Supported Platforms