Maxime Chevalier-Boisvert, a doctor specializing in Ruby performance, discusses the revolutionary YJIT compiler developed at Shopify. The conversation delves into JIT compilation's efficiency gains and the transition from C to Rust for improved compatibility. Maxime shares insights on Rust’s unique error handling and the challenges it presents to programmers. They also explore the implementation benefits of YGIT in Ruby, highlighting benchmarks and the potential impact on memory and performance specific to various applications.