# Instance


The description of an instance. Currently, Amazon EC2 instances are the only supported instance type.

## Contents


 ** amiLaunchIndex **   <a name="Snowball-Type-devicemanagement_Instance-amiLaunchIndex"></a>
The Amazon Machine Image (AMI) launch index, which you can use to find this instance in the launch group.   
Type: Integer  
Required: No

 ** blockDeviceMappings **   <a name="Snowball-Type-devicemanagement_Instance-blockDeviceMappings"></a>
Any block device mapping entries for the instance.  
Type: Array of [InstanceBlockDeviceMapping](API_devicemanagement_InstanceBlockDeviceMapping.md) objects  
Required: No

 ** cpuOptions **   <a name="Snowball-Type-devicemanagement_Instance-cpuOptions"></a>
The CPU options for the instance.  
Type: [CpuOptions](API_devicemanagement_CpuOptions.md) object  
Required: No

 ** createdAt **   <a name="Snowball-Type-devicemanagement_Instance-createdAt"></a>
When the instance was created.  
Type: Timestamp  
Required: No

 ** imageId **   <a name="Snowball-Type-devicemanagement_Instance-imageId"></a>
The ID of the AMI used to launch the instance.  
Type: String  
Required: No

 ** instanceId **   <a name="Snowball-Type-devicemanagement_Instance-instanceId"></a>
The ID of the instance.  
Type: String  
Required: No

 ** instanceType **   <a name="Snowball-Type-devicemanagement_Instance-instanceType"></a>
The instance type.  
Type: String  
Required: No

 ** privateIpAddress **   <a name="Snowball-Type-devicemanagement_Instance-privateIpAddress"></a>
The private IPv4 address assigned to the instance.  
Type: String  
Required: No

 ** publicIpAddress **   <a name="Snowball-Type-devicemanagement_Instance-publicIpAddress"></a>
The public IPv4 address assigned to the instance.  
Type: String  
Required: No

 ** rootDeviceName **   <a name="Snowball-Type-devicemanagement_Instance-rootDeviceName"></a>
The device name of the root device volume (for example, `/dev/sda1`).   
Type: String  
Required: No

 ** securityGroups **   <a name="Snowball-Type-devicemanagement_Instance-securityGroups"></a>
The security groups for the instance.  
Type: Array of [SecurityGroupIdentifier](API_devicemanagement_SecurityGroupIdentifier.md) objects  
Required: No

 ** state **   <a name="Snowball-Type-devicemanagement_Instance-state"></a>
The description of the current state of an instance.  
Type: [InstanceState](API_devicemanagement_InstanceState.md) object  
Required: No

 ** updatedAt **   <a name="Snowball-Type-devicemanagement_Instance-updatedAt"></a>
When the instance was last updated.  
Type: Timestamp  
Required: No

## See Also


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/snow-device-management-2021-08-04/Instance) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/snow-device-management-2021-08-04/Instance) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/snow-device-management-2021-08-04/Instance)