Configuring the Network Load Balancer (NLB)
A load balancer serves as the single point of contact for clients. The load balancer distributes incoming application traffic across multiple targets, such as Compute Engine VM instances, in multiple availability zones. Balancing the load increases the availability of your application. Google Cloud supports two types of load balancers: application and network. you will configure an internal network load balancer (NLB).
The NLB needs to be configured with locations to balance requests; this is realized by creating Frontend and Backend configurations for various ports depending on the capabilities that have been deployed.