Zookeeper is a centralized service that is used to manage the configuration and coordination of Kafka clusters.

Zookeeper is used to monitor the health of Kafka brokers and to trigger the reassignment of partitions in the event of a broker failure.

Zookeeper maintains a record of the Kafka brokers in a cluster, including their current status

Zookeeper is used by Kafka brokers to elect a leader for each partition

Zookeeper is used to store the configuration of Kafka topics, including the number of partitions and the replication factor.

Zookeeper is used to store the offset of the last message consumed by a consumer group

Zookeeper is typically deployed as a separate service from Kafka, but it is closely integrated with the Kafka brokers