Terminology for Aiven for Apache Kafka® MirrorMaker 2
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- **Cluster alias**: The name alias defined in MirrorMaker 2 for a certain Apache Kafka® source or target cluster.
- **Replication flow**: The flow of data between two Apache Kafka® clusters (called source and target) executed by Apache Kafka® MirrorMaker 2. One Apache Kafka® MirrorMaker 2 service can execute multiple replication flows.
- **Remote topics**: Topics replicated by MirrorMaker 2 from a source Apache Kafka® cluster to a target Apache Kafka® cluster. There is only one source topic for each remote topic. Remote topics refer to the source cluster by the topic name prefix: ``{source_cluster_alias}.{source_topic_name}``.