When a hydrant is flagged, three systems should each react on their own with no central state machine and no ordered multi-step waits. Which coordination style fits?
Select an answer to reveal the explanation.
Short Explanation
Three neighbors each hearing the same smoke alarm and grabbing their own extinguisher—that's choreography. Publish the hydrant flag and let each system own its reaction without a central conductor. Step Functions shines when you need ordered waits; SSH cron and lock-step DynamoDB turns add coupling you don't need here.
Full Explanation
Choreography suits simple, independent reactions to a shared event when no central ordered state is required. Step Functions orchestration is preferable for long-running, stateful, multi-step coordination. SSH-based sequential cron and lock-table turn-taking introduce tight operational coupling for a scenario that only needs independent notifications.