AZ-104 Certification Notes

Chapter 10.2 - Using Application Gateway

Describe Azure Application Gateway

• Azure Application Gateway (App GW)
  • Azure Application Gateway is a networking service for load balancing between backend compute
    • Layer 7 load balancing (HTTP/HTTPS)
    • URL path-based routing
    • Backend resources must be redundant
    • Virtual machines, VMSS, App Services

Components of an Application Gateway

• Frontend IP
  • Private or public endpoint for accessing the load balancing solution
• Backend Pool
  • Compute solution underlying the load balancer
• Listener
  • Port, protocol, and certificate configurations
• Rules
  • Load balancing rules, HTTP settings, and health probe

Key Takeaways

• Load Balancing
  • Balance traffic between backend pools using HTTP/HTTPS
• SSL Termination
  • Terminate TLS/SSL at the application gateway
• URL Routing
  • URL path-based routing between multiple backend pools
• Security
  • Web Application Firewall security for the load balancing solution
• Autoscaling
  • Scale up/down the backend pools for the application gateway