Create multi-destination connectors in AWS SAM - AWS Serverless Application Model
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Create multi-destination connectors in AWS SAM

Within a source resource, you can define a single connector with multiple destination resources. Here's an example of a Lambda function source resource connecting to an Amazon Simple Storage Service (Amazon S3) bucket and DynamoDB table:

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
...
Resources:
  MyFunction:
    Type: AWS::Serverless::Function
    Connectors:
      WriteAccessConn:
        Properties:
          Destination:
            - Id: OutputBucket
            - Id: CredentialTable
          Permissions:
            - Write
  ...
  OutputBucket:
    Type: AWS::S3::Bucket
  CredentialTable:
    Type: AWS::DynamoDB::Table

For more information on using connectors, refer to AWS SAM connector reference.