At the fundamental awareness level, individuals are expected to have a basic understanding of what Azure Application Gateway is and its role in application delivery. They should be aware of the benefits and limitations of using Azure Application Gateway but may not have hands-on experience with it.

Novices should be able to set up an Azure Application Gateway and configure basic routing rules. They should understand the concept of health probes and be able to perform basic troubleshooting. At this level, individuals are still reliant on instructions and guidelines.

At the intermediate level, individuals should be comfortable configuring SSL termination, implementing URL path-based routing, and managing the gateway using Azure PowerShell. They should also understand and be able to implement autoscaling and configure custom health probes. They can solve problems and make decisions independently.

Advanced users should be capable of implementing multi-site hosting, configuring redirection, and setting up a Web Application Firewall on Azure Application Gateway. They should also be proficient in configuring session affinity and troubleshooting complex issues. They can handle unexpected situations and adapt their actions accordingly.

Experts should be able to design and implement high availability architectures with Azure Application Gateway, optimize it for performance and cost, and secure applications using advanced firewall policies. They should also be proficient in integrating Azure Application Gateway with other Azure services and automating its management. Experts have a deep understanding of the system and can innovate new solutions.