What is Azure Application Gateway?

Azure Application Gateway is a load balancing solution provided by Microsoft Azure. This web traffic load balancer works on Layer 7 of the OSI model and enables you to manage traffic for your web applications. Unlike traditional load balancers that operate at Layer 4 and route traffic based on source IP address and port, Azure Application Gateway makes routing decisions based on additional attributes of an HTTP request such as URI path or host headers.

Source: What is Azure Application Gateway? Step-by-Step Tutorial (intellipaat.com)