Azure Front Door

Azure Front Door is a load balancing service that also operates as a Layer 7 load balancer much like Azure Application Gateway. The service is very similar except that it is designed for global delivery of services as opposed to regional. The service also has the ability to enable WAF services and is designed for web-based workloads. One of the great benefits of the Front Door service is its ability to offer different traffic-routing methods:

• Latency: This is designed for faster connections to your services by routing requests to the backends that have the lowest latency. This means that services located closer to where you are connecting from globally will be faster and, therefore, respond quicker.
• Priority: You can assume a primary delivery backend pool for your service with a backup (secondary) backend pool when the primary pool fails.
• Weighted: This option is for when you have several backend pools and want to distribute traffic in a weighted fashion...