Secondary DNS serves as a crucial backup to Primary DNS, ensuring continuous service availability in the event of primary server failure. It mirrors the authoritative DNS data from the primary server, providing redundancy and fault tolerance. Secondary servers respond to queries when the primary server is unreachable, thereby preventing downtime and maintaining online accessibility. This redundancy enhances the reliability and resilience of DNS infrastructure, safeguarding against disruptions caused by server outages, network issues, or cyber attacks. By distributing the DNS workload and diversifying points of failure, secondary DNS plays a vital role in ensuring seamless and uninterrupted access to websites and online services. Learn more about the difference between Primary DNS and Secondary DNS!