So you’ve developed a snazzy new Serverless API on AWS and everything is going great. That is until you realize that there might eventually be production data behind it that you don’t want someone with Postman and 20 minutes on their hands to have access to. That’s where Lambda Authorizers come in. They’re a way to make sure that your API will only respond to authorized callers. Let’s look at how to implement authorizers for ourselves using an example application called Serverless Jams - where we vote on our favorite coding-related music.