Amazon SNS now supports message payloads up to 1 MiB
Amazon SNS increases message payload size limit from 256 KiB to 1 MiB, allowing larger messages to be published to SNS topics
Amazon Simple Notification Service (Amazon SNS) has quadrupled its message payload limit from 256 KiB to 1 MiB, allowing workloads like application integration, IoT, and generative AI to exchange more data in a single message. By setting the new MaximumMessageSize topic attribute, you can publish up to 1 MiB message payloads on both SNS standard and SNS FIFO topics. Topics with MaximumMessageSize greater than 256 KiB support subscriptions to Amazon SQS, Amazon Data Firehose, and AWS Lambda, with up to 100 subscriptions per topic. This feature is available in all AWS regions where Amazon SNS is offered.
Why it matters
Amazon SNS is a fully managed pub/sub messaging service that helps decouple and scale microservices and serverless applications. This update is useful for workloads such as application integration, IoT, and generative AI that handle larger data volumes in single messages.