# Cognito
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The object describing a `Cognito` event source type.

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

### YAML
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```
  [Trigger](#sam-function-cognito-trigger): List
  [UserPool](#sam-function-cognito-userpool): String
```

## Properties
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 `Trigger`   <a name="sam-function-cognito-trigger"></a>
The Lambda trigger configuration information for the new user pool.  
*Type*: List  
*Required*: Yes  
*CloudFormation compatibility*: This property is passed directly to the `[LambdaConfig](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-cognito-userpool-lambdaconfig.html)` property of an `AWS::Cognito::UserPool` resource.

 `UserPool`   <a name="sam-function-cognito-userpool"></a>
Reference to UserPool defined in the same template  
*Type*: String  
*Required*: Yes  
*CloudFormation compatibility*: This property is unique to AWS SAM and doesn't have an CloudFormation equivalent.

## Examples
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### Cognito Event
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Cognito Event Example

#### YAML
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```
CognitoUserPoolPreSignup:
  Type: Cognito
  Properties:
    UserPool:
      Ref: MyCognitoUserPool
    Trigger: PreSignUp
```