How does Rails handle large-scale domain event modeling in enterprise systems?

Rails models domain events as immutable records that represent state changes in business processes.

Domain events capture meaningful business occurrences such as 'OrderPlaced' or 'PaymentCompleted'. These events are immutable and stored in event stores or message brokers. Rails emits events after state changes and downstream services react asynchronously. This enables loose coupling, auditability, and event-driven architectures.