Azure Load Balancer

Abimuktheeswaran Chidambaram
1 min readJan 28, 2024

Normally, Load Balancer is used to distribute incoming network traffic across multiple servers to improve application performance, availability, and scalability.

Azure Load Balancer is a traditional load balancer that operates at layer 4 of the Open Systems Interconnection (OSI) model. Load Balancer distributes inbound flows that arrive at the load balancer’s front end to backend pool instances (Azure VMs or instances).

1. Types of Load Balancer in Azure:

A public load balancer is used to distribute internet traffic from outside to your VMs which is inside your virtual network. These connections are accomplished by translating their private IP addresses to public IP addresses.


An internal (or private) load balancer is used to load balance traffic inside a virtual network. It uses private IP addresses.

2. Stock Keeping Unit (SKU) in Azure refers to the version (or) variation in the resource. There are 2 variations in Azure LB called Basic and Standard. The basic model provides basic features whereas the Standard model provides additional features than the basic model. check out the features here.