Your environment uses ExpressRoute to connect on-premises and Azure. You need to periodically record uptime and latency of the connection using a VM in Azure and a VM on-premises. Which tool should you use?

Connection Monitor is the correct choice because it is specifically designed to monitor network connectivity between Azure resources and on-premises locations, including ExpressRoute circuits. It allows you to define source and destination endpoints (VMs in this case) and continuously track network performance metrics like latency and packet loss, providing historical data and alerts. Azure Monitor is a broad monitoring service that collects metrics and logs, but Connection Monitor is a specific feature within it tailored for network connectivity testing. IP flow verify is a Network Watcher tool used for troubleshooting network security group rules, not for continuous performance monitoring. Azure Internet Analyzer is for testing website performance from various global locations, not for private connectivity like ExpressRoute.