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Same-region replication - Amazon Managed Streaming for Apache Kafka

Same-region replication

In same-region replication (SRR), both the source and target MSK clusters are in the same AWS Region. Same-region replication is useful for data aggregation, distributing data to partners, or migrating between clusters.

Key differences from cross-region replication:

  • The source cluster does not require multi-VPC private connectivity.

  • You do not need to attach a resource-based permissions policy to the source cluster.

  • You must provide security groups for both the source and target clusters. The subnets you select for the source and target clusters must be in the same Availability Zones.

  • The source cluster can still be accessed by other clients using the unauthenticated auth type.