Announcing increased 1 MB payload size support in Amazon EventBridge

Amazon EventBridge increases event payload size from 256 KB to 1 MB, enabling developers to ingest richer, complex payloads for their event-driven workloads without the need to split, compress, or externalize data.

Amazon EventBridge is a serverless event router that enables you to create scalable event-driven applications by routing events between your applications, third-party SaaS applications, and AWS services. These applications often need to process rich contextual data, including large-language model prompts, telemetry signals, and complex JSON structures for machine learning outputs. The new 1MB payload support in EventBridge Event Buses enables developers to streamline their architectures by including comprehensive data in a single event, reducing the need for complex data chunking or external storage solutions.

This feature is available in all commercial AWS Regions where Amazon EventBridge is offered, except Asia Pacific (New Zealand), Asia Pacific (Thailand), Asia Pacific (Malaysia), Asia Pacific (Taipei), and Mexico (Central). For a full list, see the AWS Regional Services List. To learn more, visit the EventBridge documentation.