Amazon MSK Makes ZooKeeper-to-KRaft Migration a Breeze

Amazon MSK now lets you upgrade existing Kafka clusters from Apache ZooKeeper to KRaft without downtime, new infrastructure, or client reconfigs—just upgrade to Kafka 3.9.x and hit migrate. This in-place upgrade is live across all AWS regions (except European Sovereign Cloud), giving you a smooth path to Kafka 4.x and ditching ZooKeeper's complexity for Kafka's built-in consensus protocol.