About Azure Traffic Manager

  • Microsoft Azure Traffic Manager allows you to control the distribution of user traffic for service endpoints in different datacenters.
  • Service endpoints supported by Traffic Manager include Azure VMs, Web Apps, and cloud services. You can also use Traffic Manager with external, non-Azure endpoints.
  •  When Traffic Manager receives a DNS request, it chooses an available endpoint to return in the DNS response. Traffic manager bases the choice on the current endpoint status and the traffic-routing method.


ATM Routing methods


Azure Traffic Manager supports four traffic-routing methods to determine how to route network traffic to the various service endpoints. Traffic Manager applies the traffic-routing method to each DNS query it receives. The traffic-routing method determines which endpoint returned in the DNS response.  


  • Priority: Select Priority when you want to use a primary service endpoint for all traffic, and provide backups in case the primary or the backup endpoints are unavailable.

  • Weighted: Select Weighted when you want to distribute traffic across a set of endpoints, either evenly or according to weights, which you define.

  • Performance: Select Performance when you have endpoints in different geographic locations and you want end users to use the "closest" endpoint in terms of the lowest network latency.

  • Geographic: Select Geographic so that users are directed to specific endpoints (Azure, External, or Nested) based on which geographic location their DNS query originates from. This empowers Traffic Manager customers to enable scenarios where knowing a user’s geographic region and routing them based on that is important. Examples include complying with data sovereignty mandates, localization of content & user experience and measuring traffic from different regions

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