In 2025, a follow-up concurrency evaluation was conducted to compare six programming languages in AWS Lambda, revisiting a 2023 benchmark. The study implemented concurrent S3 object processing using language-specific idioms. Key changes included private VPC connectivity to S3, the use of S3 Express One Zone, and upgraded language versions and runtimes. The evaluation revealed significant performance improvements across all languages, particularly at lower memory configurations. Architectural changes eliminated the S3 warmup effect, providing consistent latency from the first request. However, S3 Express One Zone showed no measurable advantage over Standard S3 in this workload. Java’s virtual threads stood out as a major improvement. The study also examined the relationship between code complexity and performance, finding that Python and Node.js offered the best balance of simplicity and decent execution times.