Simple AWS Architecture: Connecting Public and Private VPCs with VPC Peering

https://knowledge.businesscompassllc.com/simple-aws-architecture-connecting-public-and-private-vpcs-with-vpc-peering/

If you’ve been building on AWS for a while, you’ve probably hit a point where you need two VPCs to talk to each other — maybe a public-facing app needs to reach a locked-down database sitting in a private VPC. That’s exactly where AWS VPC Peering comes in, and it’s simpler to set up than most people think.