AWS Lambda Supports Scalable Network Bandwidth up to 3,000 Mbps for Non-VPC Functions
AWS has updated Lambda to support scalable network bandwidth, significantly improving data transfer rates for execution environments. Functions running outside a VPC that are allocated with 2 GB of memory or more can now scale up to 3,000 Mbps of network throughput. This allows data-heavy workloads, such as machine learning inference or large file processing, to run more efficiently.
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| Aspect | Before / Alternative | After / This |
|---|---|---|
| Maximum Bandwidth | Standard limited network throughput based on memory allocation | Up to 3,000 Mbps of scalable network bandwidth |
| Memory Requirement | Applied to all memory configurations with lower caps | Requires 2 GB of memory or more to access the higher limits |
| VPC Requirement | Standard throughput applied regardless of VPC placement | Specifically targets functions configured outside of a VPC |
Action Checklist
- Identify latency-sensitive Lambda functions currently running outside a VPC Focus on workloads that download or upload large datasets
- Increase the function memory allocation to at least 2 GB Bandwidth scaling triggers automatically at or above this memory threshold
- Measure performance improvements and monitor execution duration changes Observe if faster data transfer reduces total function execution time and lowers costs
Source: AWS What's New
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