Support for Amazon VPC
Amazon Virtual Private Cloud (VPC) lets you provision a private, isolated section of the Amazon Web Services (AWS) Cloud where you can launch AWS resources in a virtual network that you define. Instances launched within the VPC have private addresses assigned from a range you define.
Traffic Manager AMIs can be deployed either inside or outside of a VPC. Traffic Manager AMIs deployed outside of a VPC are sometimes referred to as EC2-Classic. There are, however, a number of differences in the way that the Traffic Manager handles IP addressing and Traffic IP groups when deployed inside a VPC. These differences are covered in more detail in Traffic IP Groups and Fault Tolerance on Amazon EC2
References to EC2 instances within this guide should be taken to mean all Traffic Manager instances launched into Amazon EC2, regardless of whether this is a VPC or an EC2-Classic deployment. Differences in functionality are noted in this guide.
This guide assumes you are familiar with VPC functionality in Amazon EC2. For more details about the VPC capabilities, implementation and deployment, see http://aws.amazon.com/vpc.