Route53 the AWS DNS Service

Computers use the IP address to communicate within them over the internet and a Domain Name System (DNS) is a service that performs the conversion of domain names into IP addresses.

Assuming you already have knowledge about DNS and its key aspects I am moving ahead with this article.

Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. It is an extremely reliable and cost-effective way to route end users to Internet applications by translating names like www.example.com into the numeric IP addresses like 192.0.2.1 that computers use to connect to each other. Amazon Route 53 is fully compliant with IPv6 as well.

I found interesting information on why AWS has kept its name as Route53 for DNS service, Route53 takes its name with reference to port 53 in which DNS operates and route refers to routing or it is said to be a popular highway naming convention.

Key concepts to you need to be aware of Route53:

Hosted Zone - A hosted zone is a container that holds information about how you want to route traffic for a domain, such as example.com and its subdomains.

Record Set - A record set (also known as a resource record set) is the collection of DNS records in a zone that has the same name and is of the same type. Most record sets contain a single record.

Name Server - It is a record that has the same name as your hosted zone. It lists the four name servers that are the authoritative name servers for your hosted zone.

The following examples show the format for the names of Route 53 name servers :

• ns-2048.awsdns-64.com, ns-2049.awsdns-65.net, ns-2050.awsdns-66.org

and ns-2051.awsdns-67.co.uk.

Choosing a suitable routing policy -

• Simple routing policy - Use for a single resource that performs a given function for your domain, for example, a web server that serves content for the example.com website.
• Failover routing policy - Use when you want to configure active-passive failover.
• Geolocation routing policy - Use when you want to route traffic based on the location of your users.
• Geoproximity routing policy - Use when you want to route traffic based on the location of your resources and, optionally, shift traffic from resources in one location to resources in another.
• Latency routing policy - Use when you have resources in multiple AWS Regions and you want to route traffic to the Region that provides the best latency with less round-trip time.
• Multivalue answer routing policy - Use when you want Route 53 to respond to DNS queries with up to eight healthy records selected at random.
• Weighted routing policy - Use to route traffic to multiple resources in proportions that you specify.

Benefits of AWS Route53 — Highly available and reliable, Flexible, Designed for use with other Amazon Web Services, Simple, Fast and Cost-effective.

Amazon Route 53 currently supports the following DNS record types:

• A (address record)
• AAAA (IPv6 address record)
• CNAME (canonical name record)
• CAA (certification authority authorization)
• MX (mail exchange record)
• NAPTR (name authority pointer record)
• NS (name server record)
• PTR (pointer record)
• SOA (start of authority record)
• SPF (sender policy framework)
• SRV (service locator)
• TXT (text record)

Read FAQs about AWS Route53 to get more information.

https://aws.amazon.com/route53/faqs/

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