DNS Forwarding improves performance, load balances, and makes your network more resilient. It provides a way to pass on namespaces or resource records that are not contained in a local Domain Name System (DNS) server's zone to remote DNS server for resolution of name queries both inside and outside a network.

What happens if you don't configure DNS forwarding?

Without forwarding, all DNS servers will query external DNS resolvers if they don't have the required addresses cached. This can result in excessive network traffic.

What do DNS forwarders do?

DNS forwarding is the process by which particular sets of DNS queries are forwarded to a designated server for resolution according to the DNS domain name in the query rather than being handled by the initial server that was contacted by the client. This process improves the network's performance and resilience.