DNA Center (Catalyst Center) emits a network event that must reach a ticket opener, a ChatOps Webex notifier, and a metrics recorder. The producer must not wait on or know those consumers. Which pattern fits?
Select an answer to reveal the explanation.
Short Explanation
A town crier rings the bell once; listeners decide what to do—he does not run each errand himself. Event-driven publish/subscribe gives that fan-out and decoupling. Synchronous REST chains make the producer wait on every consumer.
Full Explanation
Event-driven architecture fits when producers must not block on consumers and should remain unaware of subscriber sets. Fan-out to ticketing, Webex ChatOps, and metrics is a classic case. Synchronous chains and embedding consumers in the producer couple them temporally and operationally.