Cargo

Cargo is the official build system and package manager for the Rust programming language.

Cargo acts as the central operator for all Rust projects: it handles dependency resolution, ensuring your project's required libraries (crates) are downloaded from the community registry, crates.io. The tool manages the entire build lifecycle, from creating a new project with `cargo new` to compiling the code with `cargo build` and running tests with `cargo test`. Project configuration lives in the `Cargo.toml` manifest file, a critical component for defining metadata, dependencies, and build profiles. It's the standard, non-negotiable tool for any serious Rust development.

https://doc.rust-lang.org/cargo/