Azure Loadbalancer
Load balancer
A public load balancer is a Layer 4 solution for distributing TCP and UDP traffic to a backend pool. Basic and standard SKUs are available for load balancer. These SKUs correspond with the basic and standard SKUs of a public IP address. - Basic SKU public IP <-> Azure Load Balancer Basic - Standard SKU public IP <-> Azure Load Balancer Standard
Azure Load Balancer Basic supports only IPv4. LB Standard supports both IPv4 and IPv6.
All VMs added to the backend pool must be in the same virtual network.
You can not use basic load balancer to balance between single VMs . the have to be in a scale set or availability set
- Microsft Server SQL Always on Availability with floating IP for internal load balancer