Getting started

To get started, you'll need the Serverless Framework installed. You'll also need your environment configured with AWS credentials.

Then, let's install a few dependencies. We'll install the express framework, as well as the serverless-http:

$ npm install --save express serverless-http

Then create a file index.js and initialize it like so:

const serverless = require('serverless-http');
const express = require('express')
const app = express()

app.get('/', function (req, res) {
  res.send('Hello World!')
})

module.exports.handler = serverless(app);

The serverless-http package is a handy piece of middleware that handles the interface between your Node.js application and the specifics of API Gateway.

Then create a file serverless.yml:

  service: my-express-application

provider:
  name: aws
  runtime: nodejs6.10
  stage: dev
  region: us-east-1

functions:
  app:
    handler: index.handler
    events:
      - http: ANY /
      - http: 'ANY {proxy+}'

Now deploy

$ sls deploy

Hooray! congratulations :D

Coming part for how to use Dyanmodb as a data resource for enriching API.

resources : Book: Full Stack Serverless: Modern Application Development for Nader Dabit serverless.com/blog/serverless-express-rest..