Important Terms: Azure load balancer overview Load balancing provides a higher level of availability by spreading incoming requests across multiple virtual machines. An Azure load balancer is a Layer-4 (TCP, UDP) load balancer that provides high availability by distributing incoming traffic among healthy VMs. A load balancer health probe monitors a given port on each VM and only distributes traffic to an operational VM. You define a front-end IP configuration that contains one or more public IP addresses. This front-end IP configuration allows your load balancer and applications to be accessible over the Internet. Virtual machines connect to a load balancer using their virtual network interface card (NIC). To distribute traffic to the VMs, a back-end address pool contains the IP addresses of the virtual (NICs) connected to the load balancer. To control the flow of traffic, you define load balancer rules for specific ports and protocols that map to your VMs. ...