https://github.com/apex/up is a godsend for deploying on AWS Lambda for me. By the same author as Express JS, TJ Holowaychuk.

TJ abstracts the Lambda nonsense so you just get to use a standard HTTP res/resp interface. https://github.com/apex/up-examples/

Deployment iterations for me in Singapore can be as low as 2s, but tbh I use https://github.com/codegangsta/gin locally for development iterations.