VPC & Subnets

• VPC (Virtual Private Cloud): private network to deploy your resources (regional resource).
• Subnets allow you to partition your network inside your VPC (Availability Zone resource).
• A Public Subnet is a subnet that is accessible from the internet.
• A Private Subnet is a subnet that is not accessible from the internet.
• To define access to the internet and between subnets, we use Route Tables.

VPC Diagram

Internet Gateway & NAT Gateways

• Internet Gateways helps our VPC instances connect with the internet.
• Public Subnets have a route to the internet gateway.
• NAT Gateways (Network Address Translation) (AWS-managed) & NAT Instances (self-managed) allow your instances in your Private Subnets to access the internet while remaining private.

Network ACL & Security Groups