DNS : 

Domain Name System (DNS) is a distributed system that translates human-readable domain names (e.g. example.com) into machine-readable IP addresses. DNS is an essential part of the internet and is used to route traffic to websites and other internet resources. 

•  In Amazon Web Services (AWS), you can use Amazon Route 53 as your DNS provider to manage DNS records for your domain. 
• Route 53 enables you to register domain names, set up DNS records for your resources (such as Amazon Elastic Compute Cloud (EC2) instances and Amazon Simple Storage Service (S3) buckets), and route traffic to your resources. You can also use Route 53 to set up domain registration and manage DNS records for your domain.
•  Route 53 supports various DNS record types, including A records (IPv4 addresses), AAAA records (IPv6 addresses), CNAME records (canonical names), and MX records (mail exchange records). 
• You can use these record types to set up custom DNS configurations for your domain, such as routing traffic to multiple resources or setting up a failover configuration. 
• You can access and manage Route 53 through the AWS Management Console, the AWS command line interface (CLI), or the Route 53 API. 

Here are some common use cases for Route 53: 

•  Routing traffic to resources in multiple AWS regions for improved performance and availability 
• Routing traffic to resources in on-premises data centers
• Setting up a failover configuration to route traffic to a backup resource in the event of an outage 
• Setting up weighted routing to distribute traffic across multiple resources ● Setting up health checks to monitor the availability of your resources ● You can access and manage Route 53 through the AWS Management Console, the AWS command line interface (CLI), or the Route 53 API.