Here’s how Amazon Route 53 provides the resources in question:

Globally Distributed Servers

Amazon is a global service and consequently has DNS services globally. Any customer creating a query from any part of the world gets to reach a DNS server local to them that provides low latency.

Dependency

Route 53 provides a high level of dependability required by critical applications

Optimal Locations

Route 53 uses a global anycast network to answer queries from the optimal position automatically. 

https://aws.amazon.com/route53/faqs/#:~:text=Using%20a%20global%20anycast%20network,latency%20for%20your%20end%20users.