Virtual Private Cloud

  • A Virtual Private Cloud (VPC) is logically isolated from other VPCs on AWS.

  • VPCs are regions specific

  • A default VPC is created in each region with a subnet in each AZ.

  • You can define dedicated tenancy for a VPC to ensure instances are launched on a dedicated hardware.

  • The default VPC has all public subnets.

  • Public Subnets:

    • Auto Assign public IPv4 address set to Yes
    • The subnet route table has an attached Internet Gateway.

  • Instances in the default VPC always have both a public and private IP addresses.

  • AZ names are mapped to different zones for different users.