Azure Application Gateway is a powerful Microsoft Azure PaaS service that is providing HTTP load balancing, reverse proxy, SSL termination and web application firewall capabilities. May 23, 2018 · Using Azure Application Gateway WAF’s to secure Azure Web Apps with Traffic Manager for Geo-redundancy Part 2 During implementation of the concept in Part 1 I discovered that Traffic Manager probes were not accurately reporting outages of the web app’s and would still route traffic to improperly functioning web apps. Azure Application Gateway offers application-level routing and load balancing services that let you build a scalable and highly available web front-end in Azure. It enables cookie affinity for cross-session state sharing and can be managed through Azure API.Azure Application Gateway enables you to build highly scalable and available web sites by providing HTTP load balancing and delivery control. Web Application Firewall Application Gateway provides you with all the benefits of a basic Application Gateway, as well as protection against malicious web requests. Oct 21, 2018 · Cause. The application gateway can only perform session-based affinity by using a cookie. If the application cannot handle cookie-based affinity, you must use an external or internal azure load balancer or another third-party solution.