Many people miss event-driven architecture benefits because they believe it is complex and challenging to implement. In this talk, I will show you how my Watermill library can help you to build a basic event-driven application in Go in 20 minutes. In this talk, I will show that building a basic event-driven application is not that scary with the open-source Watermill library (that I'm the author of). As part of this presentation, I will do live coding so you can see that building an event-driven application may be as straightforward as building an HTTP server. I will briefly overview event-driven architecture (EDA) and why it is a valuable tool for building scalable, resilient applications.