Most routing sends data to one specific destination, but anycast routing takes a different approach: the same IP address is assigned to multiple servers in different locations, and traffic is directed to whichever one is closest or most available at that moment.

The impact of anycast routing is that users around the world connect to the same address but land on different servers depending on where they are. This keeps response times low by distributing the data load across multiple locations rather than funneling everything to a single point.

Anycast routing is commonly used by Content Delivery Networks (CDNs), DNS servers, and large-scale internet infrastructure, where speed and reliability are critical. When you look up a website and get a response in milliseconds, anycast is often part of what makes that possible.

Anycast routing also improves resilience. If one server goes offline, traffic automatically shifts to the next best option without any action required from the user.