In this three-part series, we deep dive into the Kubernetes Pod networking options on Amazon, and provide a bit of guidance around the various trade-offs involved in selecting a particular Kubernetes Network technology for your cluster on Amazon. Please see here for Part 1.
The other part to understanding networking on Kubernetes running on Amazon is the underlying Amazon network technology. AWS started out with a simple flat network, but due to customer demand for segmented networks, and to provide a more full-featured network implementation, it now includes VPC (virtual private cloud).