Virtual Private Gateway (VGW) ¶
A virtual private gateway establishes a connection to the cloud while creating a VPN tunnel.
The AWS virtual private gateways come into the picture when we want to establish a VPN connection to Amazon VPC.
Where is VPG hosted?
The gateway on the customer(our) side is known as Customer Gateway, and the gateway on the AWS side of the VPN tunnel is named Virtual Private Gateway.
AWS Virtual Private Gateway establishes a secure connection between your on-premises server and cloud-hosted VPC. On establishing this connection, you get access to all the resources of your AWS VPC using its private IP address from your on-premises data center.
Use transit gateway in case of multiple VPC's
A transit gateway is a transit hub that you can use to interconnect your VPCs and your on-premises networks. For more information, see Amazon VPC Transit Gateways. You can create a Site-to-Site VPN connection as an attachment on a transit gateway.
The following diagram shows a VPN connection between multiple VPCs and your on-premises network using a transit gateway. The transit gateway has three VPC attachments and a VPN attachment.
