How to configure DNS forwarder and conditional forwarder in windows server 2016

DNS Forwarders are queries that the DNS server send up stream when it cannot resolve a request locally. A DNS server only forwards data when it has not been able to resolve a query with its own authoritative data or from its own cache.

Conditional Forwarder setting configures the DNS server to forward a query that it receives to a DNS server, depending on the DNS name that the query contains