AWS Lambda supports Kafka event sources in four new regions

[AWS Lambda](https://aws.amazon.com/lambda/) now supports Amazon Managed Streaming for Apache Kafka (MSK) and self-managed Apache Kafka as event sources in the Asia Pacific (Hyderabad), Asia Pacific (Melbourne), Europe (Spain), Europe (Zurich) Regions, enabling customers to build serverless applications that process streaming data from Kafka event sources. Lambda launched support for Amazon MSK and self-managed Apache Kafka in 2020\. This feature lets you build serverless applications triggered by Apache Kafka topics using Amazon MSK or using Apache Kafka clusters that you manage. Messages are processed in batches of up to 10,000 records, which may contain messages from one or more partitions. Messages within a partition are always processed in order. Lambda is invoked when the batch size or batch window is reached, or the payload size reaches 6MB. This feature incurs no additional charge. You pay for the Lambda function invocations triggered by the event source mapping connected to Kafka. To learn more, see the Lambda developer Guide for [Amazon MSK](https://docs.aws.amazon.com/lambda/latest/dg/with-msk.html) and [self-managed Apache Kafka](https://docs.aws.amazon.com/lambda/latest/dg/with-kafka.html).