# Tag
<a name="API_Tag"></a>

 A list of tag key and value pairs that you define. 

## Contents
<a name="API_Tag_Contents"></a>

 ** key **   <a name="computeoptimizer-Type-Tag-key"></a>
 One part of a key-value pair that makes up a tag. A key is a general label that acts like a category for more specific tag values.   
Type: String  
Required: No

 ** value **   <a name="computeoptimizer-Type-Tag-value"></a>
 One part of a key-value pair that make up a tag. A value acts as a descriptor within a tag category (key). The value can be empty or null.   
Type: String  
Required: No

## See Also
<a name="API_Tag_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/compute-optimizer-2019-11-01/Tag) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/compute-optimizer-2019-11-01/Tag) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/compute-optimizer-2019-11-01/Tag)