WHAT IS AZURE LOAD BALANCER?
Azure Load Balancer secures high availability and network performance to your applications/frontend/backend.
It is a Layer 4 load balancer (TCP/UDP) that distributes traffic among instances of services defined in the load-balanced set.
You can load-balance web applications, Virtual Machines, and so-on by routing traffic based on NAT rules that you configure on the load-balancer.