Load balancers control the traffic to the applications that come with your service instances. They receive the client requests to the applications for a service and then, they distribute them among the VMS in a service instance. The OVERHEAD of encrypting and decrypting HTTPS traffic is also transferred to the load balancer. Load balancers can temporarily suspend traffic access to the service instance in ORDER to perform ROUTINE maintenance. Each load balancer node is assigned a separate public IP address. 

Load balancers control the traffic to the applications that come with your service instances. They receive the client requests to the applications for a service and then, they distribute them among the VMs in a service instance. The overhead of encrypting and decrypting HTTPS traffic is also transferred to the load balancer. Load balancers can temporarily suspend traffic access to the service instance in order to perform routine maintenance. Each load balancer node is assigned a separate public IP address.