Apache NiFi Data Routing is the advanced practice of designing, implementing, and operating data flows that move data reliably across enterprise systems. It encompasses routing strategies (how data is split and sent), failover patterns (what happens when a destination fails), compliance (audit, retention, encryption), and performance optimization. A data routing engineer answers: Where does this data come from? Where does it go? What happens if a destination is down? How do we audit every record? How do we scale when volume doubles?