This post explains how to use WhatsApp as a third-party messaging service to send notification messages from Amazon Cognito, like verification codes, by leveraging Cognito's custom SMS sender Lambda trigger and integrating with WhatsApp's API.

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<p>This article explains how to use WhatsApp to send verification codes or MFA codes from Amazon Cognito instead of SMS, by leveraging the custom SMS sender Lambda trigger.</p>
<p>Specifically, the article covers:</p>
<ul>
<li>Prerequisites like AWS account, Meta developer account, Git, AWS CDK Toolkit, Node.js, and Docker</li>
<li>Creating and configuring a Meta app for WhatsApp communication</li>
<li>Creating a user for accessing WhatsApp API</li>
<li>Creating a WhatsApp message template</li>
<li>Storing the WhatsApp access token in AWS Secrets Manager</li>
<li>Deploying the solution using AWS CDK code</li>
<li>Testing the solution by signing up a new Cognito user</li>
<li>Cleanup steps to delete the resources</li>
</ul>
</div>


How to use WhatsApp to send Amazon Cognito notification messages

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