Definition: Event-driven architecture is a software design in which services communicate by producing and reacting to events, such as "order placed" or "payment failed", usually through a message broker or streaming platform rather than direct calls.
Producers publish events to a broker such as Apache Kafka, Amazon Kinesis, RabbitMQ or a cloud event bus. Consumers subscribe and react independently. Streaming platforms keep an ordered log of events, so new consumers can replay history and analytics can process data in real time.
Loose coupling lets teams add consumers without changing producers, absorb traffic spikes and keep working when one service is down. It supports real-time use cases such as fraud scoring, notifications, inventory updates and feeding fresh data to AI systems.
Flows are harder to trace and debug, ordering and duplicate events must be handled, and data is eventually consistent. Good schema management and observability are essential. It is often paired with microservices.
Ryz back-end developers design and build event-driven systems in your stack, working on your team.
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