Azure Load Balancer has benefits that make it an attractive solution; the following points are some of the benefits:

• Uses hash-based distribution mode: This is the default mode for Azure Load Balancer, which is a 5-tuple hash that consists of the source IP, the source port, the destination IP, the destination port, and the protocol type which maps the traffic to the available servers. As a result, as long as the session is open, all of the packets within it will be directed to the same instance behind the load balancer.
• Traffic control: You can control the flow of the traffic by specifying that the inbound traffic that will come on a specific port will be directed to a specific port internally. For example, if you have an incoming request for the web server on port 80 on the public endpoint, but the web server behind the load balancer is configured to listen on port 3315, you can control that, as Azure Load Balancer supports port forwarding.
• Awareness of the instances: Azure Load Balancer is aware of not only the instance status, but also its number and whether it is scaled up or down, and it automatically reconfigures the load balancer whenever the number of instances changes.