Transit Gateway and Site-to-Site VPNs
Transit Gateway and Site-to-Site VPNs
Transit Gateway
For connectivity between VPCs, AWS Transit Gateway makes life easy, or at least much easier than past solutions. It will form the core of our VPC-to-VPC and VPC-to-Datacenter communication.
AWS Transit Gateway is a service that enables customers to connect their Amazon Virtual Private Clouds (VPCs) and their on-premises networks through a single gateway. As you grow the number of workloads running on AWS, you will find it important to be able, in as simple a fashion as possible, to scale your networks across multiple accounts and Amazon VPCs to keep up with the growth. Today you can connect pairs of Amazon VPCs using VPC Peering; however, managing point-to-point connectivity across many Amazon VPCs, without the ability to centrally manage the connectivity policies, can be operationally costly and cumbersome. For on-premises connectivity, you need to attach your AWS VPN to each individual Amazon VPC. This solution can be time-consuming to build and harder to manage when the number of VPCs grows into the hundreds.
This is what our VPC and datacenter connectivity will look like. We will touch base independently on each Transit Gateway component in the upcoming sections:
