Azure Traffic Manager gives you three traffic routing methods to choose from: failover, performance, or weighted round robin. You choose the one that’s right for your application or scenario.
Traffic Manager can improve the availability of important applications by monitoring your Azure or external sites and services and automatically directing users to a new location anytime there’s a failure.
Traffic Manager makes applications more responsive and improves content delivery times by directing users to an Azure or external location with the lowest network latency.
Traffic Manager can direct user traffic to distribute it across multiple locations, such as multiple cloud services or multiple Azure Web Apps. Traffic Manager can use either equal or weighted load distribution.
Traffic Manager is also a popular option for on-premises scenarios including burst-to-cloud, migrate-to-cloud, or failover-to-cloud. Use it to upgrade or perform maintenance on your on-site datacenter without inconveniencing customers.