Cloud DNS is Google's global domain name service. It has everything you need to manage, and serve your domains. You can use it for mapping public IP addresses to public domain names, and for creating private domain names as well. Now, this second feature is extremely useful for managing highly complex infrastructure. Instead of hard coding the IP addresses of various services in your code, you can use internal DNS names instead. That means that when an IP address changes, you don't have to change your code. It also makes testing and deployment much easier since the same DNS names can work across multiple environments including development, testing, staging, and production.

With Google Cloud DNS, there's no need to maintain your own DNS servers or software. The service is fully managed and highly scalable. It can handle millions of records. Cloud DNS all offers a hundred percent availability and low latency access from anywhere in the world. On top of that, you can also generate detailed logs to use for monitoring and troubleshooting. If you already have a GCP account, then using Cloud DNS is a no-brainer.