Create Subnets within the VPC

# Create subnet associated with the VPC
aws ec2 create-subnet --vpc-id vpc-xxxxxx --cidr-block 10.0.1.0/24 --region us-east-1
{
    "Subnet": {
        "AvailabilityZone": "us-east-1b",
        "AvailableIpAddressCount": 251,
        "CidrBlock": "10.0.1.0/24",
        "DefaultForAz": false,
        "MapPublicIpOnLaunch": false,
        "State": "pending",
        "SubnetId": "subnet-xxxxxx",
        "VpcId": "vpc-xxxxxx",
        "AssignIpv6AddressOnCreation": false,
        "Ipv6CidrBlockAssociationSet": []
    }
}