|
Scenario |
Azure Front Door |
Traffic Manager |
Application Gateway |
Azure Load Balancer |
API Management |
Azure Firewall |
Why This Works |
|
Global Public Web Application |
Yes |
Optional |
Optional |
Optional |
No |
Optional |
Azure Front Door provides Global Entry, WAF, and Failover; App Gateway optional for Regional Control; Firewall only if needed |
|
Multi-Region Active/Active Web App |
Yes |
Optional |
Optional |
Optional |
No |
Optional |
Front Door Routes to closest healthy region; Traffic Manager optional for DNS-Based Routing |
|
Single-Region Internet-Facing Web App |
No |
No |
Yes |
Optional |
No |
Optional |
Application Gateway handles HTTP Ingress and WAF at Regional Level |
|
Internal Line-of-Business Application |
No |
No |
Yes (Internal) |
Optional |
No |
Optional |
Internal App Gateway or Load Balancer Provides Private Access inside VNet |
|
Global API Platform |
Yes |
Optional |
Optional |
No |
Yes |
Optional |
Front Door handles Global Routing; API Management enforces Policies; App Gateway optional |
|
Regional API Backend |
No |
No |
Optional |
No |
Yes |
Optional |
API Management provides API Governance, Security, Throttling |
|
Legacy DNS-Based Failover |
No |
Yes |
Optional |
Optional |
No |
No |
Traffic Manager provides simple DNS-Level Routing without Proxy or Inspection |
|
Non-HTTP Workloads (SQL, SMTP, TCP/UDP) |
No |
Optional |
No |
Yes |
No |
Optional |
Load Balancer provides L4 routing; Traffic Manager optional for Global DNS |
|
Secure Private PaaS Access |
Optional |
No |
Optional |
No |
Optional |
Optional |
Private Endpoint + Private DNS is Primary; Firewall/App Gateway optional for Inspection |
|
SaaS with Zero Trust Edge Security |
Yes (Premium) |
No |
Optional |
No |
Optional |
Optional |
Front Door Premium provides WAF, identity, and edge security; App Gateway optional |
|
Dev/Test/Prod Environment Isolation |
Optional |
No |
Optional |
Optional |
Optional |
Optional |
Hub-Spoke Architecture; Services depend on Environment Design |
|
High Compliance Regulated Workload |
Yes (Premium) |
Optional |
Yes |
Optional |
Yes |
Yes |
Layered Security: Front Door + App Gateway + Firewall + API Controls |
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