AWS Lambda supports various environmental setups. 

These setups can be used for data and several other user credentials when you needed in deployment packages modifications. 

As we know that AWS Lambda is a serverless approach, and supports aliases. 

AWS Lambda types are easily considered during stage production and app developments.

 Thus the Lambda function can be considered for testing and without actually interrupting the production user code. 

The important thing is that the end-point doesn’t change and keep up the specific tasks

https://aws.amazon.com/lambda/it-automation/