Improving Lambda function latency with scalable network bandwidth

AWS Lambda now supports scalable network bandwidth for functions configured with 2,048 MB or more memory, increasing sustained throughput from 625 Mbps to up to 3,000 Mbps at 10,240 MB.

• Network bandwidth scales at ~280 Mbps per additional GB of memory above 2 GB threshold
• Enables 4.8x throughput increase, allowing 3 TB data download in under 10 seconds
• Ideal for latency-sensitive workloads like log querying, insurance underwriting, financial ETL, and genomics
• Benchmark shows 2.69x faster query completion (2.64s vs 7.11s) for 10 GB dataset
• Best practices include profiling workloads, designing for parallelism, and using S3 byte-range reads
• Requires quota request through AWS Service Quotas for Network bandwidth per execution environment

Scalable network bandwidth eliminates network I/O bottlenecks for data-intensive Lambda workloads, reducing latency and costs while maintaining SLA compliance.