serverless-express

I can definitely understand you cringing about the re-encoding, but I just wanted to point out that the reason that we took this approach was simply to give a semi-plausible real-world example of how tools like aws-serverless-express [1] and Exodus [2] can be used to build useful APIs with AWS Lambda [3] and AWS Gateway [4]. These articles are primarily meant to be educational tutorials that people can use as a reference when writing and deploying their own APIs. The whole "converting to MP3" thing is just an easily understandable premise which lays out a clear goal for the tutorials to build upon. [1] - https://github.com/awslabs/aws-serverless-express [2] - https://github.com/intoli/exodus [3] - https://aws.amazon.com/lambda/ [4] - https://aws.amazon.com/api-gateway/

I'm kind of surprised that the article doesn't mention aws-serverless-express [1], a node module provided by Amazon which makes it fairly trivial to expose an existing Express app as a Lambda function via AWS API Gateway. The Lambda handler module basically just consists of the following code. const awsServerlessExpress = require('aws-serverless-express'); const app = require('./app'); const server = awsServerlessExpress.createServer(app); exports.handler = (event, context) => ( awsServerlessExpress.proxy(server, event, context) ); It's really convenient to be able to develop simple APIs using Express, and then to expose them via Lambda functions using aws-serverless-express. After you've done it once or twice, it's really easy to throw together single-purpose APIs and deploy them in a matter of minutes. For ex