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Getting Started with Event Streaming on Amazon MSK Serverless - Building a Zero-Ops Kafka Environment

Learn how to build a cluster-free Kafka environment with IAM authentication and simplify event streaming through integration with EventBridge Pipes.

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Key Features of MSK Serverless

MSK Serverless is a Kafka environment that completely eliminates the need for cluster provisioning, scaling, and patching. Once you create a cluster, an endpoint is immediately available, and you can start creating topics and sending and receiving data from Kafka clients. There is no need to specify broker instance types or node counts, and throughput automatically scales up to 200 MB/s per partition. While provisioned clusters allow fine-grained customization of Kafka configuration parameters (such as retention.ms and max.message.bytes), these settings are automatically managed in Serverless.

IAM Authentication and Access Control

MSK Serverless uses IAM authentication by default. Kafka clients connect to MSK using AWS credentials (IAM roles), and IAM policies configure topic-level access control. This enables fine-grained control, such as allowing a specific IAM role to read from and write to only certain topics. Unlike SASL/SCRAM authentication used with provisioned clusters, there is no need to manage usernames and passwords, and IAM automatically handles credential rotation. For connections from Lambda functions or ECS tasks, authentication is complete simply by granting MSK access permissions to the execution role.

Integration with EventBridge Pipes

EventBridge Pipes is a service that directly connects MSK topics as a source to targets such as Lambda, Step Functions, SQS, and Kinesis Data Streams. Previously, you had to develop and operate your own Kafka consumer applications, but with Pipes, writing consumer code is no longer necessary. Filtering enables selective processing based on event conditions, and enrichment allows you to insert data transformation via Lambda functions. The combination of MSK Serverless + EventBridge Pipes + Lambda lets you build a fully serverless event streaming pipeline. To deepen your understanding of MSK use cases, related books (Amazon) can be helpful.

MSK Serverless Pricing

MSK Serverless pricing consists of cluster hours, partition hours, storage, and data transfer. A cluster costs approximately $0.75 per hour, and partitions cost approximately $0.0015 per partition-hour. Storage is approximately $0.10 per GB per month, and data transfer charges standard rates for outbound traffic while inbound within the region is free. Compared to provisioned clusters (approximately $150/month for kafka.m5.large), Serverless is more cost-effective for intermittent workloads, but provisioned clusters are more advantageous for environments running at high throughput around the clock.

Summary

MSK Serverless completely eliminates Kafka operational management, letting you focus on building event streaming solutions. It simplifies credential management through IAM authentication and reduces consumer development effort with EventBridge Pipes. You get the operational efficiency of serverless while maintaining compatibility with the Kafka ecosystem.

Related Services

Amazon MSKA fully managed Apache Kafka service for real-time streaming data processingAmazon EventBridgeA serverless event bus that routes events from AWS services and SaaS applicationsAWS LambdaA serverless compute service that runs code without server management

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