Fifty million messages a day on fifty Lambda functions
When people hear that Comify’s backend is fifty-some AWS Lambda functions moving more than fifty million messages a day, the usual reaction is “isn’t serverless expensive at that scale?” It’s the right question with the wrong assumption baked in. Serverless got chosen because of the scale and the economics, not in spite of them. But you only get the good version if you design for it deliberately. The naive version is genuinely a trap. ...