Anycast DNS is a service that allows multiple DNS servers to route the user to the closest server, increasing performance. On the other hand, Unicast DNS requires users to use the same server for DNS resolution, which can lead to slower performance. The advantage of using Anycast DNS is that it can provide higher availability as the server closest to the users is chosen. Unicast DNS, however, may lead to downtimes if that single server fails. Anycast DNS is best suited for large services that have to serve large amounts of customers around the world. Unicast DNS is suitable for smaller services and lower traffic, as it is more cost-effective. When choosing the right DNS service, domain owners must consider the size, location, and budget of their services. Anycast DNS provides greater performance and scalability as it is more distributed, while Unicast DNS is more economical and simpler to set up. Read more about the differences between Anycast DNS and Unicast DNS.