Instance identity documents for Amazon EC2 instances

Each instance that you launch has an instance identity document that provides information about the instance itself. You can use the instance identity document to validate the attributes of the instance.

The instance identity document is generated when the instance is stopped and started, restarted, or launched. You can access the instance identity document for an instance through the Instance Metadata Service (IMDS). For the instructions, see Retrieve the instance identity document.

The instance identity document uses plaintext JSON format. It includes the following information.

Data	Description
accountId	The ID of the AWS account that launched the instance.
architecture	The architecture of the AMI used to launch the instance (i386 | x86_64 | arm64).
availabilityZone	The name of the Availability Zone in which the instance is running. For example, us-east-1. Keep in mind that Availability Zone names might differ across AWS accounts.
billingProducts	The billing products of the instance.
devpayProductCodes	Deprecated.
imageId	The ID of the AMI used to launch the instance.
instanceId	The ID of the instance.
instanceType	The instance type of the instance.
kernelId	The ID of the kernel associated with the instance, if applicable.
marketplaceProductCodes	The AWS Marketplace product code of the AMI used to launch the instance.
pendingTime	The date and time that the instance was launched.
privateIp	The private IP address of the instance. For IPv4-only and dual-stack instances, this contains the IPv4 address. For IPv6-only instances, this contains the IPv6 address.
ramdiskId	The ID of the RAM disk associated with the instance, if applicable.
region	The Region in which the instance is running.
version	The version of the instance identity document format.