Amazon VPC Concepts
External
Internal
Overview
Amazon VPC provides a logically isolated section of the AWS Cloud where AWS resources run in a private virtual network.
Subnet
Route Table
Network Gateway
Security
Security Group
Network Access Control List (ACL)
Virtual Private Cloud (VPC)
A VPC is an isolated portion of the AWS Cloud populated by AWS objects, such as Fargate tasks.
VPC ID
CIDR Block
10.0.0.0/16
Block sizes must be between /16 netmask and /28 netmask.
Subnet
The range of IP addresses in the subnet must be a subset of the IP address in the VPC. Block sizes must be between /16 netmask and /28 netmask. The size of the subnet can equal the size of the VPC.
Subnet
A subnet is a range of IP addresses in the Virtual Private Cloud (VPC) that can be used to isolate different EC2 resources or ECS services from each other or from the Internet. Each subnet resides in one Availability Zone. Subnets enable you to group instances based on security and operational needs. To enable instances in a subnet to reach the Internet and AWS services, you must add an Internet gateway to the VPC and a route table with a route to the Internet to the subnet.
Example:
subnet-53993c24: 172.31.16.0/20