Event-driven architecture has become a cornerstone of modern distributed systems, enabling applications to react to events in real-time and process information more fluidly. Traditional synchronous approaches, such as RESTful APIs, often result in bottlenecks, tight coupling, and challenges in handling high loads. With Spring Cloud Stream, we can implement event-driven microservices seamlessly, leveraging message brokers like Kafka and RabbitMQ to decouple services and enable asynchronous communication.