AWS Lambda announces scalable network bandwidth up to 3,000 Mbps for functions outside a VPC

AWS Lambda has introduced scalable network bandwidth for functions operating outside a VPC, addressing performance constraints in latency-sensitive workloads. Functions configured with 2 GB of memory or more now receive proportional bandwidth scaling, starting at 625 Mbps and reaching up to 3,000 Mbps at 10 GB. This change eliminates previous throughput limits that could slow data transfers for high-volume processing tasks. The adjustment aims to reduce execution times and per-invocation costs while improving overall performance for end users.

Customers leveraging Lambda for data-intensive applications, such as processing several terabytes of information, will benefit from the increased bandwidth. The feature automatically scales with the function’s memory allocation, ensuring consistent performance as workloads grow. Previously, the fixed 625 Mbps limit could bottleneck data transfers, particularly for workloads requiring rapid access to external data sources. AWS states the enhancement helps maintain efficiency without manual intervention.

To enable scalable network bandwidth, users must submit a request through AWS Service Quotas under the Network bandwidth per execution environment quota. Once approved, the feature activates for all eligible functions outside a VPC in the account. Bandwidth scaling occurs automatically based on the function’s memory configuration, removing the need for additional configuration per function. This streamlines adoption for existing and new Lambda deployments requiring higher throughput.

The scalable network bandwidth feature is available at no additional charge in all commercial AWS Regions. AWS directs users to the Lambda quotas page for further details on configuration and limits. The update reflects AWS’s ongoing efforts to optimize Lambda performance for demanding workloads, particularly those outside VPC environments where network constraints were previously a limiting factor.