An Amazon EC2 Dedicated Host is a physical server with EC2 instance capacity fully dedicated to your use. Dedicated Hosts can help you address compliance requirements and reduce costs by allowing you to use your existing server-bound software licenses.
You can now tag EC2 Dedicated Hosts using the AWS API or CLI. A tag is a label that you can assign to EC2 Dedicated Hosts and they enable you to categorize your Hosts in different ways, for example, by purpose, owner, or environment. This helps you quickly identify specific Dedicated Hosts based on the tags assigned to it.
Click here to learn more about you can start tagging Dedicated Hosts.