[scarface74]

https://github.com/awslabs/aws-serverless-express

With no code changes, you can deploy a standard Node/Express app as either a lambda service or a standard Express app.

There are a frameworks like this from AWS for all supported languages. It’s well documented how to use the API Gateway lambda proxy feature.

For non API lambdas. The only thing you have to do is add an entry point method that takes has two arguments - a JSON event object and a lambda context.

I have another app that can be deployed as a Windows .Net Core service or lambda based on the CI/CD pipeline.