AWS Route 53 Overview

AWS Route 53 Overview

• AWS Route 53 is a highly available and scalable Domain Name System (DNS) web service.
• It routes users to applications cost-effectively and reliably.

Key Features

• Domain Registration: Register and manage domain names within AWS.
• DNS Routing: Route traffic using various policies.
• Health Checking and Monitoring: Automatically monitors resources and routes traffic accordingly.
• Scalability and Reliability: Handles high traffic with a 100% availability SLA.
• Integration with AWS Services: Seamlessly integrates with other services like EC2, S3, and CloudFront.

DNS Basics

• DNS (Domain Name System): Translates human-readable domain names (like example.com) into IP addresses (like 192.0.2.1).
• DNS Records:
  • A Record: Maps a domain to an IPv4 address.
  • AAAA Record: Maps a domain to an IPv6 address.
  • CNAME Record: Maps a domain to another domain name.
  • MX Record: Specifies mail servers for email delivery.
  • TXT Record: Stores text-based information for verification.

Route 53 Components

• Hosted Zones: Contain DNS records for a specific domain.
  • Public Hosted Zone: Accessible over the internet.
  • Private Hosted Zone: Accessible within an Amazon VPC.

Routing Policies

• Simple Routing: Maps a domain to a single resource.
• Weighted Routing: Distributes traffic across multiple resources based on weights.
• Latency-based Routing: Routes users to the lowest-latency resource.
• Failover Routing: Routes traffic to a healthy resource if one fails.
• Geolocation Routing: Routes traffic based on user location.
• Geoproximity Routing: Routes based on geographic proximity with optional bias.
• Multivalue Answer Routing: Returns multiple IP addresses for DNS queries.

Health Checks and Monitoring

• Continuously checks resource health.
• Supports HTTP, HTTPS, and TCP endpoints.
• Automatically redirects traffic to healthy resources if a failure occurs.
• Integrates with CloudWatch for health check logs.

Integration with AWS Services

• Amazon EC2: Maps domain names to EC2 instances.
• Amazon S3: Hosts static websites and routes traffic to S3 buckets.
• AWS CloudFront: Integrates with CloudFront for content delivery.
• AWS Elastic Load Balancing (ELB): Routes traffic to load balancers.

Security and Compliance

• DNSSEC Support: Protects against DNS spoofing attacks.
• IAM Policies: Control access to Route 53 resources.
• Compliance Certifications: Meets various regulatory requirements.

Pricing Overview

• Domain Registration: Pricing based on TLD (Top Level Domain).
• Hosted Zones: Charges per hosted zone per month.
• Queries: Billed per million queries.
• Health Checks: Charges based on the number of checks.

Use Cases

• Website Hosting: Manages DNS for web applications.
• Global Traffic Management: Optimizes routing for global users.
• Disaster Recovery: Implements failover routing for high availability.
• Hybrid Cloud DNS: Integrates on-premises and AWS resources.