The C to Rust migration book

Mainmatter has published "The C to Rust Migration Book," a self-paced learning resource that teaches developers how to safely migrate C codebases to Rust incrementally without complete rewrites. The book covers foreign function interfaces (FFI), type safety across language boundaries, validation, error handling, and production-quality practices needed to maintain mixed C-Rust codebases. It is designed for developers with prior Rust and C knowledge and includes hands-on exercises to prepare them for introducing Rust into existing C projects.