Serverless architecture is a cloud computing execution model where a cloud provider like AWS, Azure or Google Cloud is used to deploy backend or server-side code. In comparison to traditionally deployed web applications, in serverless architecture, the developer does not has to maintain the servers or the infrastructure. They only have to pay a subscription to the third party vendor whereas the vendor is responsible to handle the operation of the backend logic of a server along with scalability, reliability, and security.
This is a companion discussion topic for the original entry at https://blog.crowdbotics.com/how-to-build-a-serverless-backend-with-aws-lambda-and-node-js/