Amazon Route 53 is a scalable and highly available Domain Name System (DNS) web service that helps route end-user requests to AWS resources or external endpoints.
DNS (Domain Name System) is a system that translates human-readable domain names into IP addresses, allowing computers to locate resources on the internet.
Amazon Route 53 manages the DNS records for our domain, allowing to associate domain names with resources such as EC2 instances, S3 buckets, and load balancers.
Amazon Route 53 offers several routing policies, including Simple, Weighted, Latency, Failover, Geolocation, and Multi-Value.
The Simple routing policy directs traffic to a single resource, such as an IP address or an Amazon S3 bucket, without any logic or decision-making.
It allows to distribute traffic across multiple resources based on assigned weights. we can control the distribution of traffic based on proportions.
It directs traffic to the AWS region with the lowest latency for a given user, improving the user experience by minimizing response times.
Failover routing lets you route traffic to a resource when the resource is healthy or to a different resource when the first resource is unhealthy. The primary and secondary records can route traffic to anything from an Amazon S3 bucket that is configured as a website to a complex tree of records. OR
The Failover routing policy directs traffic to a primary resource and fails over to a secondary resource if the primary resource becomes unavailable.
The Geolocation routing policy directs traffic based on the geographic location of the user, allowing route users to the nearest or most appropriate resource.
The Multi-Value routing policy allows to associate multiple resources with a single DNS name and return multiple IP addresses in a random or weighted manner.
To route traffic to an AWS resource, We can create DNS records, such as A records for IPv4 addresses and Alias records for AWS resources like ELB, S3, and CloudFront distributions.
Yes, Route 53 can route traffic to resources outside of AWS by using the simple routing policy to direct traffic to IP addresses or domain names.
Route 53 provides health checks to monitor the health of resources and can automatically fail over to healthy resources in case of failures.
Health checks in Route 53 monitor the health and availability of resources by periodically sending requests and verifying the responses.
We can create an Alias record in Route 53 that points to the static website hosting endpoint of the S3 bucket, allowing to use a custom domain for S3 bucket.
An alias record is a Route 53-specific DNS record that allows route traffic directly to an AWS resource, such as an ELB, CloudFront distribution, or S3 bucket.
To migrate a domain to Route 53, we can update domain's DNS settings to use Route 53's name servers and then recreate DNS records within the Route 53 console.
Route 53 allows to register new domain names, manage existing domain names, and associate them with resources and services within AWS account.
We can use the Geolocation routing policy to route users to different resources based on their geographic location, creating a global website with reduced latency.
Route 53 Resolver is a service that provides DNS resolution across Amazon VPCs and on-premises networks, enabling hybrid network configurations.