AWS VPC
Understanding what AWS provides for setting up private networks, security groups and more is important for anyone who calls themselves DevOps. AWS allows you to define a software defined network. You do this with Amazon Virtual Private Cloud (Amazon VPC). You can define subnets, ingress rules, security groups, NAT gateways, Internet gateways, and more. Amazon VPC A VPC is a virtual private cloud. You can create multiple Amazon VPCs within a region that spans multiple availability zones.