There isn't an AWS Lambda pattern specifically, so you would need to create one. OOB there are a bunch of AWS patterns, so you'd be best to start there as a reference, and use the same behaviours to call the relevant Lambda APIs.

 

You would also need to setup an AWS Credentials record so you can leverage it in the patterns. And finally, please note the call to AWS is made from the MID Server, so you need to allow outbound connections to the API (typically https - port 443).