AWS Lambda Gets Fine-Grained Control Over S3 Files Read Strategy
AWS Lambda now lets you explicitly configure whether your functions read large files directly from S3 buckets for maximum throughput or from high-performance storage for lowest latency—giving you granular optimization independent of function memory size. This capability rolls out across all AWS commercial regions plus GovCloud, with no extra costs beyond standard Lambda and S3 Files pricing.
source: [aws/whats-new]