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Confluent Kafka Connect Single Message Transforms (SMT) Overview (2026)
source.docs-confluent-io.platform-current-connect-transforms-overview-2026 ↗
Official Confluent documentation for Kafka Connect SMTs — middleware transforms modifying records in-flight. 25+ built-in transforms including ExtractField, ValueToKey, ReplaceField, Cast, EventRouter. SMTs operate between source production and Kafka write, or Kafka read and sink delivery.
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