# Kafka Connect EventRouter (Debezium) SMT Usage Reference for Confluent Platform The `EventRouter` SMT (`io.debezium.transforms.outbox.EventRouter`) routes Debezium outbox events to the appropriate Apache Kafka® topic using a regex configuration option. Use this SMT to implement the outbox pattern with Debezium Change Data Capture connectors. For complete details, see the official Debezium [Outbox Event Router SMT](https://debezium.io/documentation/reference/stable/transformations/outbox-event-router.html) documentation. For other topic-routing SMTs, refer to [Kafka Connect Single Message Transformations Reference for Confluent Platform](overview.md#connect-transforms-supported). ## Predicates Configure transformations with predicates to ensure they process only records that satisfy a particular condition. You can also use predicates in a transformation chain with the [Kafka Connect Filter (Kafka) SMT Usage Reference for Confluent Platform](filter-ak.md#ak-filter) to conditionally filter specific records. For more information, see [Predicates](filter-ak.md#predicates).