This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).
# AWS::SageMaker::EndpointConfig InstancePool
Specifies an instance type and its priority for a heterogeneous endpoint. Use instance pools to configure a production variant with multiple instance types, enabling the endpoint to provision instances across different types based on priority.
## Syntax
To declare this entity in your CloudFormation template, use the following syntax:
### JSON
```
{
"[InstanceType](#cfn-sagemaker-endpointconfig-instancepool-instancetype)" : {{String}},
"[ModelNameOverride](#cfn-sagemaker-endpointconfig-instancepool-modelnameoverride)" : {{String}},
"[Priority](#cfn-sagemaker-endpointconfig-instancepool-priority)" : {{Integer}}
}
```
### YAML
```
[InstanceType](#cfn-sagemaker-endpointconfig-instancepool-instancetype): {{String}}
[ModelNameOverride](#cfn-sagemaker-endpointconfig-instancepool-modelnameoverride): {{String}}
[Priority](#cfn-sagemaker-endpointconfig-instancepool-priority): {{Integer}}
```
## Properties
`InstanceType`
The ML compute instance type for the instance pool.
*Required*: Yes
*Type*: String
*Allowed values*: `ml.t2.medium | ml.t2.large | ml.t2.xlarge | ml.t2.2xlarge | ml.m4.xlarge | ml.m4.2xlarge | ml.m4.4xlarge | ml.m4.10xlarge | ml.m4.16xlarge | ml.m5.large | ml.m5.xlarge | ml.m5.2xlarge | ml.m5.4xlarge | ml.m5.12xlarge | ml.m5.24xlarge | ml.m5d.large | ml.m5d.xlarge | ml.m5d.2xlarge | ml.m5d.4xlarge | ml.m5d.12xlarge | ml.m5d.24xlarge | ml.c4.large | ml.c4.xlarge | ml.c4.2xlarge | ml.c4.4xlarge | ml.c4.8xlarge | ml.p2.xlarge | ml.p2.8xlarge | ml.p2.16xlarge | ml.p3.2xlarge | ml.p3.8xlarge | ml.p3.16xlarge | ml.c5.large | ml.c5.xlarge | ml.c5.2xlarge | ml.c5.4xlarge | ml.c5.9xlarge | ml.c5.18xlarge | ml.c5d.large | ml.c5d.xlarge | ml.c5d.2xlarge | ml.c5d.4xlarge | ml.c5d.9xlarge | ml.c5d.18xlarge | ml.g4dn.xlarge | ml.g4dn.2xlarge | ml.g4dn.4xlarge | ml.g4dn.8xlarge | ml.g4dn.12xlarge | ml.g4dn.16xlarge | ml.r5.large | ml.r5.xlarge | ml.r5.2xlarge | ml.r5.4xlarge | ml.r5.12xlarge | ml.r5.24xlarge | ml.r5d.large | ml.r5d.xlarge | ml.r5d.2xlarge | ml.r5d.4xlarge | ml.r5d.12xlarge | ml.r5d.24xlarge | ml.inf1.xlarge | ml.inf1.2xlarge | ml.inf1.6xlarge | ml.inf1.24xlarge | ml.dl1.24xlarge | ml.c6i.large | ml.c6i.xlarge | ml.c6i.2xlarge | ml.c6i.4xlarge | ml.c6i.8xlarge | ml.c6i.12xlarge | ml.c6i.16xlarge | ml.c6i.24xlarge | ml.c6i.32xlarge | ml.m6i.large | ml.m6i.xlarge | ml.m6i.2xlarge | ml.m6i.4xlarge | ml.m6i.8xlarge | ml.m6i.12xlarge | ml.m6i.16xlarge | ml.m6i.24xlarge | ml.m6i.32xlarge | ml.r6i.large | ml.r6i.xlarge | ml.r6i.2xlarge | ml.r6i.4xlarge | ml.r6i.8xlarge | ml.r6i.12xlarge | ml.r6i.16xlarge | ml.r6i.24xlarge | ml.r6i.32xlarge | ml.g5.xlarge | ml.g5.2xlarge | ml.g5.4xlarge | ml.g5.8xlarge | ml.g5.12xlarge | ml.g5.16xlarge | ml.g5.24xlarge | ml.g5.48xlarge | ml.g6.xlarge | ml.g6.2xlarge | ml.g6.4xlarge | ml.g6.8xlarge | ml.g6.12xlarge | ml.g6.16xlarge | ml.g6.24xlarge | ml.g6.48xlarge | ml.r8g.medium | ml.r8g.large | ml.r8g.xlarge | ml.r8g.2xlarge | ml.r8g.4xlarge | ml.r8g.8xlarge | ml.r8g.12xlarge | ml.r8g.16xlarge | ml.r8g.24xlarge | ml.r8g.48xlarge | ml.g6e.xlarge | ml.g6e.2xlarge | ml.g6e.4xlarge | ml.g6e.8xlarge | ml.g6e.12xlarge | ml.g6e.16xlarge | ml.g6e.24xlarge | ml.g6e.48xlarge | ml.g7e.2xlarge | ml.g7e.4xlarge | ml.g7e.8xlarge | ml.g7e.12xlarge | ml.g7e.24xlarge | ml.g7e.48xlarge | ml.g7.2xlarge | ml.g7.4xlarge | ml.g7.8xlarge | ml.g7.12xlarge | ml.g7.24xlarge | ml.g7.48xlarge | ml.p4d.24xlarge | ml.c7g.large | ml.c7g.xlarge | ml.c7g.2xlarge | ml.c7g.4xlarge | ml.c7g.8xlarge | ml.c7g.12xlarge | ml.c7g.16xlarge | ml.m6g.large | ml.m6g.xlarge | ml.m6g.2xlarge | ml.m6g.4xlarge | ml.m6g.8xlarge | ml.m6g.12xlarge | ml.m6g.16xlarge | ml.m6gd.large | ml.m6gd.xlarge | ml.m6gd.2xlarge | ml.m6gd.4xlarge | ml.m6gd.8xlarge | ml.m6gd.12xlarge | ml.m6gd.16xlarge | ml.c6g.large | ml.c6g.xlarge | ml.c6g.2xlarge | ml.c6g.4xlarge | ml.c6g.8xlarge | ml.c6g.12xlarge | ml.c6g.16xlarge | ml.c6gd.large | ml.c6gd.xlarge | ml.c6gd.2xlarge | ml.c6gd.4xlarge | ml.c6gd.8xlarge | ml.c6gd.12xlarge | ml.c6gd.16xlarge | ml.c6gn.large | ml.c6gn.xlarge | ml.c6gn.2xlarge | ml.c6gn.4xlarge | ml.c6gn.8xlarge | ml.c6gn.12xlarge | ml.c6gn.16xlarge | ml.r6g.large | ml.r6g.xlarge | ml.r6g.2xlarge | ml.r6g.4xlarge | ml.r6g.8xlarge | ml.r6g.12xlarge | ml.r6g.16xlarge | ml.r6gd.large | ml.r6gd.xlarge | ml.r6gd.2xlarge | ml.r6gd.4xlarge | ml.r6gd.8xlarge | ml.r6gd.12xlarge | ml.r6gd.16xlarge | ml.p4de.24xlarge | ml.trn1.2xlarge | ml.trn1.32xlarge | ml.trn1n.32xlarge | ml.trn2.48xlarge | ml.inf2.xlarge | ml.inf2.8xlarge | ml.inf2.24xlarge | ml.inf2.48xlarge | ml.p5.48xlarge | ml.p5e.48xlarge | ml.p5en.48xlarge | ml.m7i.large | ml.m7i.xlarge | ml.m7i.2xlarge | ml.m7i.4xlarge | ml.m7i.8xlarge | ml.m7i.12xlarge | ml.m7i.16xlarge | ml.m7i.24xlarge | ml.m7i.48xlarge | ml.c7i.large | ml.c7i.xlarge | ml.c7i.2xlarge | ml.c7i.4xlarge | ml.c7i.8xlarge | ml.c7i.12xlarge | ml.c7i.16xlarge | ml.c7i.24xlarge | ml.c7i.48xlarge | ml.r7i.large | ml.r7i.xlarge | ml.r7i.2xlarge | ml.r7i.4xlarge | ml.r7i.8xlarge | ml.r7i.12xlarge | ml.r7i.16xlarge | ml.r7i.24xlarge | ml.r7i.48xlarge | ml.c8g.medium | ml.c8g.large | ml.c8g.xlarge | ml.c8g.2xlarge | ml.c8g.4xlarge | ml.c8g.8xlarge | ml.c8g.12xlarge | ml.c8g.16xlarge | ml.c8g.24xlarge | ml.c8g.48xlarge | ml.r7gd.medium | ml.r7gd.large | ml.r7gd.xlarge | ml.r7gd.2xlarge | ml.r7gd.4xlarge | ml.r7gd.8xlarge | ml.r7gd.12xlarge | ml.r7gd.16xlarge | ml.m8g.medium | ml.m8g.large | ml.m8g.xlarge | ml.m8g.2xlarge | ml.m8g.4xlarge | ml.m8g.8xlarge | ml.m8g.12xlarge | ml.m8g.16xlarge | ml.m8g.24xlarge | ml.m8g.48xlarge | ml.c6in.large | ml.c6in.xlarge | ml.c6in.2xlarge | ml.c6in.4xlarge | ml.c6in.8xlarge | ml.c6in.12xlarge | ml.c6in.16xlarge | ml.c6in.24xlarge | ml.c6in.32xlarge | ml.p6-b200.48xlarge | ml.p6-b300.48xlarge | ml.p6e-gb200.36xlarge | ml.p5.4xlarge`
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`ModelNameOverride`
The name of a SageMaker model to use for this instance pool instead of the model specified for the production variant. Use this to deploy a different model optimized for the instance type in this pool.
*Required*: No
*Type*: String
*Pattern*: `[a-zA-Z0-9]([\-a-zA-Z0-9]*[a-zA-Z0-9])?`
*Minimum*: `0`
*Maximum*: `63`
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`Priority`
The priority for the instance pool. SageMaker attempts to provision instances in order of priority, starting with the lowest value. If instances for a higher-priority pool are unavailable, SageMaker attempts to provision from the next pool.
Valid values: 1 to 5, where 1 is the highest priority.
*Required*: Yes
*Type*: Integer
*Minimum*: `1`
*Maximum*: `5`
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
## See also
* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS CloudFormation. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query AWSCloudFormation` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).