You have an existing Azure subscription that contains 10 virtual machines. You need to monitor the latency between your on-premises network and the virtual mach...

Network Performance Monitor is a cloud-based hybrid network monitoring solution that helps you monitor network performance between various points in your network infrastructure. It also helps you monitor network connectivity to service and application endpoints and monitor the performance of Azure ExpressRoute.
You can monitor network connectivity across cloud deployments and on-premises locations, multiple data centers, and branch offices and mission-critical multitier applications or microservices. With Performance Monitor, you can detect network issues before users complain.
Reference:
https://docs.microsoft.com/en-us/azure/azure-monitor/insights/network-performance-monitor