Kafka is a popular foundation for event-driven architectures — where services communicate through events rather than direct calls. Kafka's durable, scalable event log makes it well-suited for event-driven systems, event sourcing, and CQRS.
Kafka as the event backbone
In event-driven architecture, services emit and react to EVENTS:
→ a service publishes events to Kafka ("OrderPlaced", "PaymentReceived")
→ other services CONSUME and react (decoupled — the producer doesn't know the consumers)
→ Kafka = the durable, scalable EVENT BACKBONE connecting services
→ services are decoupled, communicating via events through Kafka
