Connectivity among VPC
VPC Peering
- peering is a One to One relation.
- Two VPC share a peering that is created beforehand.
- Peering Connection – PCX
Transit Gateway
- This a central point to communicate between the VPCs
- Allows any to any communication
- TGW has its own routing table – TGW
- TGW and the VPCs have to be in the same region
connecting to On-Prem Network to VPC
AWS VPN
- VPN connection is made between – Customer gateway on-prem <> Virtual Private Gateway
- two IPSec tunnels are created – two separate endpoints for HA in different AZ
AWS Direct Connect