# FunctionScalingConfig
<a name="sam-property-function-functionscalingconfig"></a>

Configures the scaling behavior for Lambda function versions, controlling the number of execution environments (sandboxes) that can be created. This configuration applies to both \$1LATEST.PUBLISHED and numeric function versions.

## Syntax
<a name="sam-property-function-functionscalingconfig-syntax"></a>

To declare this entity in your AWS Serverless Application Model (AWS SAM) template, use the following syntax.

### YAML
<a name="sam-property-function-functionscalingconfig-syntax.yaml"></a>

```
[MinExecutionEnvironments](#sam-function-functionscalingconfig-minexecutionenvironments): Integer
[MaxExecutionEnvironments](#sam-function-functionscalingconfig-maxexecutionenvironments): Integer
```

## Properties
<a name="sam-property-function-functionscalingconfig-properties"></a>

 `MinExecutionEnvironments`   <a name="sam-function-functionscalingconfig-minexecutionenvironments"></a>
The minimum number of execution environments to maintain for the function version.  
*Type*: Integer  
*Required*: No  
*Default*: `3`  
*Minimum*: `0`  
*CloudFormation compatibility*: This property is passed directly to the `[MinExecutionEnvironments](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-functionscalingconfig-minexecutionenvironments)` property of an `AWS::Lambda::Function` resource.

 `MaxExecutionEnvironments`   <a name="sam-function-functionscalingconfig-maxexecutionenvironments"></a>
The maximum number of execution environments that can be created for the function version.  
*Type*: Integer  
*Required*: No  
*Default*: `3`  
*Minimum*: `0`  
*CloudFormation compatibility*: This property is passed directly to the `[MaxExecutionEnvironments](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-functionscalingconfig-maxexecutionenvironments)` property of an `AWS::Lambda::Function` resource.

## Examples
<a name="sam-property-function-functionscalingconfig-examples"></a>

### Function scaling configuration
<a name="sam-property-function-functionscalingconfig-examples-basic"></a>

The following example shows a function scaling configuration with minimum and maximum execution environments.

```
FunctionScalingConfig:
  MinExecutionEnvironments: 5
  MaxExecutionEnvironments: 100
```