aws ec2 create-route
route add
aws ec2 modify-vpc-attribute
aws ec2 associate-route-table
aws ec2 create-route-table
AWS::EC2::Route
aws ec2 describe-subnets | grep -w CidrBlock
aws ec2 [ create-route | describe-route-tables ]
AWS::EC2::Subnet, aws ec2 [ create-subnet
describe-subnets
--vpc-id
MapPublicIpOnLaunch
aws_subnet
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