Introduction to Node.js Runtime

What Node.js actually is

Node.js is a JavaScript runtime built on the V8 engine. It lets you run JavaScript outside the browser, mainly for servers, CLI tools, and backend automation.

Its event-driven, non-blocking I/O model makes it efficient for APIs and real-time apps where many concurrent requests do short waiting operations.

Where Node fits in a stack

• HTTP API layer and backend services.
• Authentication and session handling.
• File uploads and background workers.
• Build tooling, scripts, and task automation.

node -v
npm -v
node
> console.log("Rishtaara Node.js course");