Node.js is an open-source, cross-platform JavaScript runtime environment that enables developers to execute JavaScript code on the server side. It is built on Chrome's V8 JavaScript engine and is widely used for building scalable and efficient web applications. Node.js uses an event-driven, non-blocking I/O model, making it lightweight and efficient for handling real-time applications and high-concurrency tasks.

Features of Node.js:

• Fast execution of JavaScript code, powered by the V8 engine.
• Event-driven and non-blocking I/O, ideal for building scalable applications.
• Rich ecosystem of packages and libraries available via npm (Node Package Manager).
• Cross-platform support, allowing developers to write applications for various operating systems.
• Supports both frontend and backend development, enabling full-stack JavaScript development.
• Active open-source community with regular updates and contributions.

To check Node.js version run: $ node -v

Disclaimer: Node.js is an open-source platform provided under the MIT license. Users should evaluate its suitability for their specific use cases and consider any potential limitations. The software is provided "as is," without warranty of any kind, express or implied.