Node.js is an open-source, server-side JavaScript runtime environment that allows developers to execute JavaScript code on the server. Node.js is designed for building scalable and high-performance network applications, including web servers and APIs.
Node.js is known for its non-blocking, event-driven architecture, which makes it suitable for handling concurrent connections and real-time applications. It is often used for building backend services and server-side applications.
Node.js has a large ecosystem of packages and modules available through npm (Node Package Manager).