graph TD
A[Web Server] --> B[API Gateway]
B --> C[Web Server]
subgraph Frontend
A
end
subgraph Backend
B
C
end
---
+-------------+
|             |
|  Web Server |
|             |
+-------------+
       |       
       |       
       |       
       |       
       v       
+-------------+
|             |
| API Gateway |
|             |
+-------------+
       |       
       |       
       |       
       |       
       v       
+-------------+
|             |
|  Web Server |
|             |
+-------------+
