How to Create a VPC in CloudFormation

It’s very easy to deploy a VPC using CloudFormation:

AWSTemplateFormatVersion: 2010-09-09
Description: Deploy a VPC

Resources:
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 10.0.0.0/16
      EnableDnsHostnames: true
      Tags:
      - Key: Name
        Value: Lab VPC
<meta charset="utf-8">Outputs:
  VPC:
    Description: VPC
    Value: !Ref VPC

This will also output the created VPC resource information.

But what if you also want to create Subnets and an attached Internet Gateway?

AWSTemplateFormatVersion: 2010-09-09
Description: Deploy a VPC

Resources:
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 10.0.0.0/16
      EnableDnsHostnames: true
      Tags:
      - Key: Name
        Value: Lab VPC

  InternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
      - Key: Name
        Value: Lab Internet Gateway

  AttachGateway:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref VPC
      InternetGatewayId: !Ref InternetGateway

  PublicSubnet1:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref VPC
      CidrBlock: 10.0.0.0/24
      AvailabilityZone: !Select 
        - '0'
        - !GetAZs ''
      Tags:
        - Key: Name
          Value: Public Subnet 1

  PrivateSubnet1:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref VPC
      CidrBlock: 10.0.1.0/24
      AvailabilityZone: !Select 
        - '0'
        - !GetAZs ''
      Tags:
        - Key: Name
          Value: Private Subnet 1

  PublicRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: Public Route Table

  PublicRoute:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref PublicRouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway

  PublicSubnetRouteTableAssociation1:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet1
      RouteTableId: !Ref PublicRouteTable

  PrivateRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: Private Route Table

  PrivateSubnetRouteTableAssociation1:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PrivateSubnet1
      RouteTableId: !Ref PrivateRouteTable

Outputs:
  VPC:
    Description: VPC
    Value: !Ref VPC
  AZ1:
    Description: Availability Zone 1
    Value: !GetAtt 
      - PublicSubnet1
      - AvailabilityZone