Pairing an automatic event notification with an event-based cloud architecture seems obvious; an application emits an event and 'code in the cloud' responds to it. Why, then, is setting up Webhooks on Serverless harder than getting gum out of your hair? Join me and untangle the mystery. In this talk we'll cover webhook fundamentals, compare webhooks from several different vendors, and then implement them in node.js on multiple serverless ecosystems.