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Cloud Architecture & Logical Network Topology

1. High-Level Architecture Diagram

graph TB
    subgraph "AWS Region: us-east-1"
        subgraph "VPC: 10.0.0.0/16"
            IGW((Internet Gateway))
            
            subgraph "Public Subnet: 10.0.1.0/24"
                LB[Load Balancer / Ingress]
                NAT[NAT Gateway]
            end
            
            subgraph "Private Subnet: 10.0.2.0/24"
                subgraph "Security Group: App-SG"
                    App1[Node Container 1]
                    App2[Node Container 2]
                end
            end
        end
    end
    
    User((Client)) --> IGW
    IGW --> LB
    LB --> App1
    LB --> App2
    App1 --> Supabase[(Supabase DB)]
    App2 --> Supabase
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2. Logical Network Topology Description

  • VPC: A dedicated virtual network (10.0.0.0/16) isolates our resources.
  • Public Subnet: Hosts the Ingress Controller and Load Balancer. Accessible from the internet (0.0.0.0/0) via the Internet Gateway.
  • Private Subnet: Hosts the application containers. purely internal. No direct internet access.
  • NAT Gateway: Allows private instances to initiate outbound connections (e.g., to fetch updates or connect to Supabase) without accepting inbound traffic.
  • Route Tables:
    • Public RT: Routes 0.0.0.0/0 to Internet Gateway.
    • Private RT: Routes 0.0.0.0/0 to NAT Gateway.