Amazon Lambda integration with Amazon MSK - Amazon Managed Streaming for Apache Kafka
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Amazon Lambda integration with Amazon MSK

The Lambda integration connects your Amazon MSK cluster to the selected Lambda function, using an Event Source Mapping (ESM) which constantly polls for messages in your topic using a resource called Event Poller. The ESM evaluates the message backlog – using the OffsetLag metric – for all partitions in the topic, and auto-scales Event Pollers to process messages efficiently.

For more information, see Using Lambda with Amazon MSK in the Amazon Lambda Developer Guide.