Too Long; Didn't Read
AWS lambda is getting quite a buzz in the world of cloud computing these days. It takes the burden of managing infrastructure from the hands of the developers. Now you have to only worry about your code, you can just put your code into a set of lambda functions and then you are good to go. Unlike AWS EC2 instances, AWS lambda is an event driven system, which will only charge you for the time that your application is running. Hence, making it a cost effective & easy way of implementing the cloud backends.