Azure Decision Tree: App Traffic Routing

Azure Services

Azure Front Door

• Layer 7 Routing: Routes HTTP/HTTPS traffic globally using:
  • Latency-Based: Directs traffic to the fastest backend for users.
  • Path-Based: Routes requests to specific backends based on the URL path.
  • Protocol-Based: Manages traffic for HTTP/HTTPS protocols.
  • WAF Rules: Includes routing decisions influenced by security policies.

Azure Traffic Manager

• DNS-Based Routing: Routes traffic globally at the DNS level using methods like:
  • Priority: Routes traffic to the primary endpoint unless it’s unhealthy.
  • Performance: Directs users to the closest endpoint with the lowest latency.
  • Geographic: Routes traffic based on the user’s location.
  • Weighted: Allocates traffic to endpoints based on assigned weights.

Azure Application Gateway

• Layer 7 Routing: Manages HTTP/HTTPS traffic regionally using:
  • URL-Based: Routes traffic based on specific URL paths.
  • Host-Based: Directs traffic based on the host header in HTTP requests.
  • Cookie Affinity: Routes requests from the same user to the same backend.
  • SSL Offloading: Handles encryption/decryption to reduce server load.

Azure Load Balancer

• Layer 4 Routing: Distributes TCP/UDP traffic within a region using:
  • Hash-Based: Balances traffic across backends based on a hashing algorithm.
  • Health Probes: Directs traffic only to healthy backend instances.

Decision Tree