Amazon Route 53 Traffic Flow
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In this section of the AWS Certified Advanced Networking - Specialty learning path, we introduce you to the various design patterns for content distribution and DNS from an AWS networking perspective that are relevant to the ANS-C01 exam.

Learning Objectives

  • Identify how to leverage Amazon CloudFront for the usage of a content distribution network (CDN)
  • Explain how Amazon Route 53 is used to design solutions that meet public, private, and hybrid DNS requirements
  • Describe how Route 53 can be used within internet-based architectures to route end users to public-facing applications


The AWS Certified Advanced Networking - Specialty certification has been designed for anyone with experience designing, implementing, and operating complex AWS and hybrid networking architectures. Ideally, you’ll also have some exposure to the nuances of AWS networking, particularly regarding the integration of AWS services and AWS security best practices. Many exam questions will require advanced level knowledge of many AWS services, including AWS networking services. The AWS Cloud concepts introduced in this course will be explained and reinforced from the ground up.


Traffic flow simplifies the process of creating and maintaining records in large and complex configurations. This is useful when you have a group of resources that perform the same operation, such as a fleet of web servers for the same domain.  

The traffic flow visual editor lets you create complex sets of records and see the relationships among them. You can combine multiple routing policies and health checks in a single configuration. Each configuration is called a traffic policy and it’s automatically versioned so you don’t have to start all over again when your configuration changes. Old versions of traffic policies continue to be available until you delete them. 

A traffic policy can define hundreds of records. Traffic flow creates all those records automatically when you create a policy record.  You create policy records to associate traffic policies with a domain or subdomain name records.  The traffic policy record appears in the list of records for the hosted zone. You can use the same traffic policy to create records in multiple public-hosted zones.  This is useful when you’re using the same hosts for multiple domains.  

Please note that the Geo-proximity routing policy is available only if you use traffic flow.

About the Author
Jorge Negrón
AWS Content Architect
Learning Paths

Experienced in architecture and delivery of cloud-based solutions, the development, and delivery of technical training, defining requirements, use cases, and validating architectures for results. Excellent leadership, communication, and presentation skills with attention to details. Hands-on administration/development experience with the ability to mentor and train current & emerging technologies, (Cloud, ML, IoT, Microservices, Big Data & Analytics).