
AWS Lambda expands its asynchronous invocation payload size from 256 KB to 1 MB, enabling developers to send richer, more complex event data without external storage or data splitting.


<div>
<p>
AWS Lambda has increased the maximum payload size for asynchronous invocations from 256 KB to 1 MB, offering developers more flexibility in event-driven architectures.
</p>
<ul>
<li>Enables processing of richer, more complex payloads without data splitting</li>
<li>Supports large-language model prompts, telemetry signals, and complex JSON structures</li>
<li>Allows inclusion of comprehensive data like user profiles and transaction histories</li>
<li>Available in all AWS Commercial and AWS GovCloud (US) Regions</li>
<li>Pricing: First 256 KB charged as 1 request, additional 64 KB chunks charged separately</li>
</ul>
<p>
The increased payload size simplifies serverless architectures by reducing the need for complex data management techniques.
</p>
</div>


AWS Lambda increases maximum payload size from 256 KB to 1 MB for asynchronous invocations

Related articles

Related articles

Jul 31
2025
AWS Lambda response streaming now supports 200 MB response payloads

Nov 14
2025
AWS Lambda now supports Java 25

Nov 14
2025
AWS Lambda enhances event processing with provisioned mode for SQS event-source mapping

Nov 25
2025
AWS Lambda adds support for Node.js 24