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A company has several legacy systems which use both on-premises servers as well as EC2 instances in AWS. The cluster nodes in AWS are configured to have a local IP address and a fixed hostname in order for the on-premises servers to communicate with them. There is a requirement to automate the configuration of the cluster which consists of 10 nodes to ensure high availability across three Availability Zones. There should also be a corresponding elastic network interface in a specific subnet for each Availability Zone. Each of the cluster node's local IP address and hostname must be static and should not change even if the instance reboots or gets terminated. Which of the following solutions below provides the LEAST amount of effort to automate this architecture?