Here is our starting question: What is the Azure Traffic Manager? Like the Azure Load Balancer, the Traffic Manager is a mechanism to distribute incoming traffic among different Azure Data Centers. Unlike the load balancing of the other Azure Balancers, the Traffic Manager's work is based on distribution via DNS entries, which means you deploy a DNS name for the Traffic Manager.

The clients connect directly to the endpoint for the application which has the best response time for its location. The Azure Traffic Manager is, for example, used as a frontend for applications distributed over different Azure regions