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::Cognito::UserPool SignInPolicy
<a name="aws-properties-cognito-userpool-signinpolicy"></a>

The policy for allowed types of authentication in a user pool. To activate this setting, your user pool must be in the [ Essentials tier](https://docs.aws.amazon.com/cognito/latest/developerguide/feature-plans-features-essentials.html) or higher.

## Syntax
<a name="aws-properties-cognito-userpool-signinpolicy-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-cognito-userpool-signinpolicy-syntax.json"></a>

```
{
  "[AllowedFirstAuthFactors](#cfn-cognito-userpool-signinpolicy-allowedfirstauthfactors)" : {{[ String, ... ]}}
}
```

### YAML
<a name="aws-properties-cognito-userpool-signinpolicy-syntax.yaml"></a>

```
  [AllowedFirstAuthFactors](#cfn-cognito-userpool-signinpolicy-allowedfirstauthfactors): {{
    - String}}
```

## Properties
<a name="aws-properties-cognito-userpool-signinpolicy-properties"></a>

`AllowedFirstAuthFactors`  <a name="cfn-cognito-userpool-signinpolicy-allowedfirstauthfactors"></a>
The sign-in methods that a user pool supports as the first factor. You can permit users to start authentication with a standard username and password, or with other one-time password and hardware factors.  
Supports values of `EMAIL_OTP`, `SMS_OTP`, `WEB_AUTHN` and `PASSWORD`,  
*Required*: No  
*Type*: Array of String  
*Minimum*: `1`  
*Maximum*: `4`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)