Amazon Cognito
Developer Guide

Set Up Amazon Cognito Events

Amazon Cognito Events allows you to execute an AWS Lambda function in response to important events in Amazon Cognito Sync. Amazon Cognito Sync raises the Sync Trigger event when a dataset is synchronized. You can use the Sync Trigger event to take an action when a user updates data. For instructions on setting up Amazon Cognito Events from the console, see Amazon Cognito Events.

To learn more about AWS Lambda, see AWS Lambda.