Split DNS is a technique used to implement different Domain Name System (DNS) configurations for a single domain name, allowing for the management of multiple DNS zones. This is useful when an organization wants to host its website and email services with different providers, for example. With split DNS, the organization can maintain separate DNS records for the website and email services, allowing them to be managed independently.
Split DNS offers many benefits, including improved security and flexibility. By using separate DNS zones for different services, organizations can reduce the risk of a single point of failure and improve the overall resilience of their IT infrastructure. Additionally, split DNS allows organizations to take advantage of specialized DNS services that may not be available through a single provider.