Rust is a systems programming language designed to be safer than existing languages like C and C++, offering memory-safety, ownership semantics, performance, and a comprehensive type system. It has become increasingly popular, topping the "most loved programming language" on Stack Overflow's Developer Survey for four years. Rust has its own package manager called Cargo, which provides an all-in-one frontend for building, packaging, and configuring Rust projects. Cargo allows users to install dependencies from remote registries into their local project using commands like `cargo install library`. Cloudsmith, a company providing Enterprise-grade features, offers hosting of public and private Cargo registries, enabling developers to host their own crates privately or share them publicly with the community.