VPC (Virtual Private Cloud)

• 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.

Diagram

Internet Gateway and NAT Gateway

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