Modern software systems don’t behave like traditional request–response applications anymore. As applications grow into distributed, real-time, and globally scaled systems, direct communication between services becomes a bottleneck. That’s where Event-Driven Architecture (EDA) comes in. Event-Driven Architecture is a design approach where systems communicate through events instead of direct API calls. When something happens in a system like a user placing an order, uploading a file, or making a payment, an event is emitted. Other services then react to that event independently, without needing to know about each other. This shift enables systems to become more loosely coupled, highly scalable, and naturally asynchronous. Instead of waiting for one service to finish a chain of operations, multiple services can respond to the same event in parallel, each handling its own responsibility.…