A google cloud customer wants to load-balance traffic among the backend vms that form part of a multi-tier application. which load-balancing option should this customer choose?

DNS (Domain Name System) and a load balancer serve different purposes. DNS provides domain names into IP addresses and allows users to access websites/services using familiar domain names. On the other hand, a load balancer distributes incoming network traffic across multiple servers. DNS provides the translation between domain names and IP addresses while a load balancer handles traffic distribution.

A gateway server refers to a server that acts as an intermediary between client systems and other servers. On the other hand, a load balancer distributes incoming network traffic across multiple servers. While a load balancer focuses on traffic distribution, a gateway server is more focused on network connectivity and security.

A load balancer is neither a server nor a router. It is a networking device that distributes incoming network traffic across multiple servers.

The following three load-balancing services from google cloud support IPv6 clients:

• HTTP(S) Load Balancing
• TCP Proxy Load Balancing
• SSL Proxy Load Balancing

AWS provides multiple load balancer services, including:

• Application Load balancer
• Network Load Balancer
• Application Load Balancer and Network Load Balancer considerations.