Have you ever developed an event-driven application or heard about this architectural approach? You might be surprised to learn that you may be using it even if you've never heard of it! This post series will explain what EDA architecture is, why it was created, what its components are, and how it is used in the Java ecosystem. In part one, you'll learn the core concepts of EDA. In part two, you'll walk through the implementation of a simple EDA project in Java. 

Today, we'll briefly introduce the basic concepts of Domain-Driven Design and Onion Architecture and highlight some advantages of bringing these two approaches together.