AWS Site-to-Site VPN
- 
To connect on prem data center to VPC.
 - 
Virtual Private Gateway
- VPN Connection on the AWS side.
 
 - 
Customer Gateway
- Software application or physical device on customer side for VPN connection.
 
 

AWS VPN CloudHub
- Provide secure communication between multiple sites.
 - Connect multiple VPN connections on the same VGW, setup dynamic routing and configure route tables.
 
