aws-vpc

The VPC itself, subnets, security groups, and route tables are free. The bill comes from what you attach: public IPv4 at $3.60/month per address (since Feb 2024), Interface VPC Endpoints at $0.01/hour per AZ, Transit Gateway at $0.05/hour per attachment, VPN at $0.05/hour, and inter-AZ data transfer at $0.01/GB each way. A modest production VPC easily lands at $500–$2,000/month.