The Tapir's Tale: Lambda, Javascript Micro-Services on AWS
http://anders.janmyr.com/2014/12/lambda-javascript-micro-services-on-aws.html
Amazon just released a bunch of new services. My favorite is Lambda. Lambda allows me to deploy simple micro-services without having to setup any servers at all. Everything is hosted in the AWS cloud. Another cool thing about Lambda services is that the default runtime is Node.js!