# Tagging AWS Elemental MediaConnect resources
<a name="tagging"></a>

A *tag* is a custom attribute label that you assign or that AWS assigns to an AWS resource. Each tag has two parts:
+ A *tag key* (for example, `CostCenter`, `Environment`, or `Project`). Tag keys are case sensitive.
+ An optional field known as a *tag value* (for example, `111122223333` or `Production`). Omitting the tag value is the same as using an empty string. Like tag keys, tag values are case sensitive.

Tags help you do the following:
+ Identify and organize your AWS resources. Many AWS services support tagging, so you can assign the same tag to resources from different services to indicate that the resources are related. For example, you can assign the same tag to an AWS Elemental MediaConnect flow that you assign to an AWS Elemental MediaLive channel output.
+ Track your AWS costs. You activate these tags on the AWS Billing and Cost Management dashboard. AWS uses the tags to categorize your costs and deliver a monthly cost allocation report to you. For more information, see [Use Cost Allocation Tags](https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/cost-alloc-tags.html) in the *AWS Billing User Guide*.

The following sections provide more information about tags for AWS Elemental MediaConnect.

**Topics**
+ [AWS Elemental MediaConnect resources that support tagging](supported-resources.md)
+ [Tag naming and usage conventions](tagging-restrictions.md)
+ [Managing tags](tagging-add-edit-delete.md)