Segment Functions - Build custom data integrations in a few lines of JavaScript

Yes we are using Lambda under the hood.

Every customer's custom source or destination is its own Lambda function. This gives us a ton of fine-grained isolation, scalability and visibility out of the box.

We ask customers to implement a single function that converts an incoming webhook to Segment data points:

  async function onRequest(request, settings) {
    Segment.track(...)
  }

Inside the function we save the users code to `handler.js` and inject index.js that loads and calls the users `onRequest` function.