VPC	Subnet	Route Table	Gateway
demo-app-vpc	demo-app-public-a	demo-app-public-rtb	demo-app-igw
	demo-app-public-c	demo-public-rtb	demo-app-igw
	demo-app-private-a	demo-app-private-a-rtb	demo-app-natgw-a
	demo-app-private-c	demo-app-private-c-rtb	demo-app-natgw-c