Deno is a modern, straightforward, and secure runtime environment designed for JavaScript, TypeScript, and WebAssembly, built on Rust and utilizing the V8 engine. Accompanying Deno is a comprehensive manual that dives deeper into the more intricate functions of the runtime, introduces the foundational concepts behind Deno, and offers insights into its internal workings, as well as guidance on how to integrate Deno into your applications and enhance it with Rust plugins. In addition to the runtime itself, Deno also offers a curated collection of standard modules that have undergone thorough audits by the maintainers, ensuring compatibility with specific versions of Deno; these modules can be found in the denoland/deno_std repository. This focus on security, ease of use, and robust documentation makes Deno an appealing choice for developers looking to build efficient applications.