# StackResourceDriftInformationSummary
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Summarizes information about whether the resource's actual configuration differs, or has *drifted*, from its expected configuration.

## Contents
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 ** StackResourceDriftStatus **   
Status of the resource's actual configuration compared to its expected configuration.  
+  `DELETED`: The resource differs from its expected configuration in that it has been deleted.
+  `MODIFIED`: The resource differs from its expected configuration.
+  `NOT_CHECKED`: CloudFormation hasn't checked if the resource differs from its expected configuration.

  Any resources that don't currently support drift detection have a status of `NOT_CHECKED`. For more information, see [Resource type support for imports and drift detection](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/resource-import-supported-resources.html). If you performed an [ContinueUpdateRollback](API_ContinueUpdateRollback.md) operation on a stack, any resources included in `ResourcesToSkip` will also have a status of `NOT_CHECKED`. For more information about skipping resources during rollback operations, see [Continue rolling back an update](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-continueupdaterollback.html) in the * AWS CloudFormation User Guide*.
+  `IN_SYNC`: The resource's actual configuration matches its expected configuration.
Type: String  
Valid Values: `IN_SYNC | MODIFIED | DELETED | NOT_CHECKED | UNKNOWN | UNSUPPORTED`   
Required: Yes

 ** LastCheckTimestamp **   
When CloudFormation last checked if the resource had drifted from its expected configuration.  
Type: Timestamp  
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/cloudformation-2010-05-15/StackResourceDriftInformationSummary) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudformation-2010-05-15/StackResourceDriftInformationSummary) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/cloudformation-2010-05-15/StackResourceDriftInformationSummary)