In this Flask & AWS video we want to learn how to Add Route53 Domain to Flask & AWS, Amazon Route 53 is highly scalable Domain Name System (DNS) web service provided by Amazon Web Services (AWS). DNS is protocol used to translate human friendly domain names such as www.example.com into machine readable IP addresses, such as 192.0.2.1, that are required to connect to resources on internet. Route 53 allows users to manage their DNS records for their domain names, including registering new domain names, creating and managing DNS records, and routing traffic to resources on AWS and other endpoints. It provides a reliable and highly available global infrastructure that can handle large amounts of traffic and requests.