Explore the innovative RedLeaf operating system, developed from scratch in Rust, in this 22-minute OSDI '20 conference talk. Dive into the impact of language safety on OS organization, examining how RedLeaf utilizes Rust's type and memory safety for isolation instead of traditional hardware address spaces. Learn about lightweight language-based isolation domains, enabling dynamic loading, clean termination, and fault isolation. Discover the implementation of Rv6, a POSIX-subset OS built with RedLeaf domains, and examine the development of efficient 10Gbps Intel ixgbe network and NVMe solid-state disk device drivers. Gain insights into isolation mechanisms, heap isolation, cross-domain communication, device driver recovery, and performance benchmarks comparing Rust implementations to traditional approaches.