# Data Types
<a name="API_Types"></a>

The Amazon Auto Scaling API contains several data types that various actions use. This section describes each data type in detail.

**Note**  
The order of each element in a data type structure is not guaranteed. Applications should not assume a particular order.

The following data types are supported:
+  [ApplicationSource](API_ApplicationSource.md) 
+  [CustomizedLoadMetricSpecification](API_CustomizedLoadMetricSpecification.md) 
+  [CustomizedScalingMetricSpecification](API_CustomizedScalingMetricSpecification.md) 
+  [Datapoint](API_Datapoint.md) 
+  [MetricDimension](API_MetricDimension.md) 
+  [PredefinedLoadMetricSpecification](API_PredefinedLoadMetricSpecification.md) 
+  [PredefinedScalingMetricSpecification](API_PredefinedScalingMetricSpecification.md) 
+  [ScalingInstruction](API_ScalingInstruction.md) 
+  [ScalingPlan](API_ScalingPlan.md) 
+  [ScalingPlanResource](API_ScalingPlanResource.md) 
+  [ScalingPolicy](API_ScalingPolicy.md) 
+  [TagFilter](API_TagFilter.md) 
+  [TargetTrackingConfiguration](API_TargetTrackingConfiguration.md)