# RuntimeVersion
<a name="API_RuntimeVersion"></a>

This structure contains information about one canary runtime version. For more information about runtime versions, see [ Canary Runtime Versions](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Synthetics_Canaries_Library.html).

## Contents
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 ** DeprecationDate **   <a name="synthetics-Type-RuntimeVersion-DeprecationDate"></a>
If this runtime version is deprecated, this value is the date of deprecation.  
Type: Timestamp  
Required: No

 ** Description **   <a name="synthetics-Type-RuntimeVersion-Description"></a>
A description of the runtime version, created by Amazon.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1024.  
Required: No

 ** ReleaseDate **   <a name="synthetics-Type-RuntimeVersion-ReleaseDate"></a>
The date that the runtime version was released.  
Type: Timestamp  
Required: No

 ** VersionName **   <a name="synthetics-Type-RuntimeVersion-VersionName"></a>
The name of the runtime version. For a list of valid runtime versions, see [ Canary Runtime Versions](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Synthetics_Canaries_Library.html).  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1024.  
Required: No

## See Also
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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/synthetics-2017-10-11/RuntimeVersion) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/synthetics-2017-10-11/RuntimeVersion) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/synthetics-2017-10-11/RuntimeVersion)