VPC

ecsfs_vpc.yaml

VPC:
  Type: AWS::EC2::VPC
  Properties:
    EnableDnsSupport: true
    EnableDnsHostnames: true
    CidrBlock: 10.0.0.0/16
    Tags:                   # You can give
      - Key: Name           # pretty names to
        Value: ECSFS VPC    # your resources.

PublicSubnetOne:
  Type: AWS::EC2::Subnet
  Properties:
    # Select the first availability zone on our current region.
    AvailabilityZone: !Select         # !Select chooses an item from a list.
      - 0                             # First availability zone, since...
      - Fn::GetAZs: !Ref AWS::Region  # ...a region has various zones (list).
    CidrBlock: 10.0.0.0/24
    VpcId: !Ref VPC

PublicSubnetTwo:
  Type: AWS::EC2::Subnet
  Properties:
    AvailabilityZone: !Select
      - 1  # Second availability zone under the same region.
      - Fn::GetAZs: !Ref AWS::Region
    CidrBlock: 10.0.1.0/24
    VpcId: !Ref VPC

PrivateSubnet:
  Type: AWS::EC2::Subnet
  Properties:
    AvailabilityZone: !Select
      - 0
      - Fn::GetAZs: !Ref AWS::Region
    CidrBlock: 10.0.2.0/24
    VpcId: !Ref VPC