Traffic manager always work in front of application gateway. Means first user face traffic manager then application gateway.
Imagine:
- Traffic Manager is like a city’s traffic controller — it directs cars (users) to different restaurants (your app gateways) based on traffic conditions.
Application Gateway is like the restaurant’s bouncer and receptionist — it manages visitors once they arrive at that specific restaurant.
🚦 Azure Traffic Manager vs Application Gateway — Explained with a Food Delivery Analogy 🍔🌍
Imagine you’re running a global food delivery app — FoodHub — with servers in:
🇺🇸 USA
🇮🇳 India
🇪🇺 Europe
Now, a customer visits www.foodhub.com. What happens?
❌ Without Traffic Manager:
Everyone connects to the same server — even if it’s far away or overloaded.
✅ With Azure Traffic Manager:
- 🇮🇳 Indian users are routed to the India server.
- 🇺🇸 US users go to the US server.
- If one server is down, users are sent to the next best one.
Result? Faster, more reliable, globally distributed experience.
🧠 How Does the Same URL Work?
- You register www.foodhub.com.
- This domain points to Traffic Manager — the global traffic controller.
- Traffic Manager routes users to the best Application Gateway based on:
- Location
- Health checks
- Performance
🏗️ Flow of Traffic:
User → DNS → Traffic Manager → Application Gateway → Web App Servers
🔍 What is Azure Traffic Manager?
A DNS-based load balancer that:
- Routes traffic before HTTP requests even begin.
- Monitors endpoint health.
- Supports multiple routing methods.
- Enables global distribution across Azure regions.
⚙️ Routing Methods:
- Priority: Always use the primary server unless it’s down.
- Performance: Route to the fastest server based on user location.
- Geographic: Route based on country/region — great for compliance.
- Weighted: Split traffic for testing or gradual rollouts.
- Multivalue: Return multiple healthy endpoints for resilience.
🌐 What Endpoints Do You Configure?
In Traffic Manager, you define endpoints like:
agw-us.mydomain.cloudapp.azure.comagw-europe.mydomain.cloudapp.azure.comagw-india.mydomain.cloudapp.azure.com
These are the public IPs or DNS names of your Application Gateways.
🧩 Endpoint Types:
- Azure endpoints (App Gateways, VMs, Web Apps in Azure)
- External endpoints (outside Azure)
- Nested endpoints (for complex setups)
💡 Think of it like this:
- Traffic Manager = City’s traffic controller
- Application Gateway = Restaurant’s bouncer + receptionist
Together, they ensure your users get the best experience — fast, secure, and region-aware.
Leave a Reply