AWS: Step functions can keep only Lambda payloads

 When running an AWS Lambda in synchronous mode from a Step Function, you will get the Lambda's return value in the output's Payload part. But unfortunately, you might also get some mostly useless information as well:

{

    "ExecutedVersion": "$LATEST",

    "Payload": {

        "result": "value"

    },

    "SdkHttpMetadata": {},

    "HttpHeaders": {}

}

When browsing your Step Functions's output, that's a lot of noise. So to keep only the lambda's payload part, you can add this line in your task definition:

    "ResultSelector": { "Payload.$": "$.Payload" }

Keep only the good stuff!