Amazon MSK Revolutionizes Scalability with Up to 5x More Partitions on Express Brokers
Seattle, WA – July 21, 2025 – Amazon Web Services (AWS) today announced a significant enhancement to Amazon Managed Streaming for Apache Kafka (Amazon MSK) with the introduction of support for up to five times more partitions on Amazon MSK Express brokers. This groundbreaking update is set to empower customers with unprecedented scalability and flexibility for their real-time data streaming workloads, enabling them to handle even larger volumes of data and a greater number of topics with enhanced efficiency.
The ability to manage a significantly higher number of partitions per broker is a critical advancement for businesses relying on Kafka for applications such as real-time analytics, financial trading, IoT data ingestion, and microservices communication. With this new capability, customers can now build and scale their streaming architectures more effectively, reducing operational overhead and unlocking new possibilities for data-intensive applications.
Key Benefits and Implications of Enhanced Partition Support:
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Unmatched Scalability: The ability to support up to 5x more partitions per broker dramatically increases the capacity of Amazon MSK clusters. This means customers can accommodate a greater number of topics and partitions within their existing infrastructure, or achieve higher throughput and lower latency with fewer brokers. This translates directly to more cost-effective and efficient scaling for growing data streams.
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Simplified Cluster Management: By allowing more partitions per broker, Amazon MSK simplifies cluster management and reduces the complexity associated with scaling. Customers will likely need fewer brokers to achieve their desired partition count, leading to a streamlined operational experience and reduced administrative burden.
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Cost Optimization: The increased partition density can lead to significant cost optimizations. By maximizing the utilization of each Express broker, customers can potentially reduce the overall number of brokers required for their workloads, leading to lower infrastructure costs.
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Enhanced Performance: With more partitions, workloads can be distributed more granularly, potentially leading to improved parallelism and lower latency for data ingestion and consumption. This is particularly beneficial for applications with demanding performance requirements.
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Future-Proofing Data Architectures: As data volumes continue to grow exponentially, this enhancement ensures that Amazon MSK remains a leading-edge solution for modern data streaming. Customers can confidently build and evolve their architectures knowing that Amazon MSK can keep pace with their future scaling needs.
The Amazon MSK Express broker type, known for its high performance and enhanced capabilities, is the foundation for this significant improvement. This announcement underscores AWS’s commitment to continuously innovating and providing customers with the tools they need to build robust and scalable real-time data processing solutions.
This update is available immediately for customers using Amazon MSK Express brokers, allowing them to leverage these enhanced scalability features for their most demanding streaming applications. This move is expected to further solidify Amazon MSK’s position as a premier managed Kafka service in the cloud, empowering organizations worldwide to harness the full potential of real-time data.
Amazon MSK now supports up to 5x more partitions on Express Brokers
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