Build a basic AWS VPC network architecture in 2026

Описание: Overview
In this walkthrough, we build a foundational AWS VPC from scratch using a single Availability Zone (AZ) architecture. This demo is designed to illustrate core networking concepts that form the foundation of scalable and secure AWS architectures. We’ll step through creating a Public Subnet, a Private Subnet, and deploying a Regional NAT Gateway to provide secure internet egress for our private resources.
Understanding the flow path between these components is the "Level 1" of cloud networking. This setup serves as the perfect starting point for more complex multi-tier applications and future scaling.

What We Cover:
VPC Basics: Setting up the CIDR block and initial environment.
Subnet Strategy: Defining the roles of our Public vs. Private subnets.
Regional NAT Gateway: Why we chose a Regional over a Zonal gateway for this build and how the traffic flows.
Routing Logic: Configuring the Route Tables to bridge our subnets to the internet safely.

Key Takeaways:
Public Subnet: Used for resources that need a direct connection to the Internet Gateway (IGW).
Private Subnet: Where your backend resources live, protected from direct inbound internet traffic.
Regional NAT Gateway: A managed service that scales across the VPC to handle outbound requests from your private instances.

Resources:
Regional NAT gateway vs. Zonal NAT gateway:    • AWS Regional NAT Gateway: Can it Actually ...  
How to Import Custom SSH Keys to AWS EC2 from your laptop:    • How to Import Custom SSH Keys to AWS EC2 f...  

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