Vercel Functions are now faster—and powered by Rust

Vercel Functions have been optimized to run faster and are now powered by Rust. The new system has already served billions of invocations, resulting in faster executions and slightly lower costs. With the migration to Rust, Vercel Functions have seen a 30% improvement in cold start times for smaller workloads and an average of 80ms faster execution time for larger workloads. The move to Rust has also improved streaming response times by 47%. These improvements will soon be available to all customers, with further performance enhancements planned for the future.