Node.js

Node.js is a server-side JavaScript runtime built on Chrome’s V8 engine, designed for building fast, scalable network applications. It operates on a single-threaded event loop, supporting asynchronous, non-blocking I/O that efficiently handles multiple concurrent connections.

This makes Node.js ideal for real-time apps like chat platforms, streaming services, and APIs. Developers use it to create full-stack solutions, often combining it with front-end frameworks like React or Vue. Its package manager, npm, hosts over a million libraries, boosting productivity and code reuse.

Node.js supports modern development paradigms like microservices and serverless architecture. It’s popular among startups and enterprises alike for its speed, simplicity, and active community. With built-in modules and strong ecosystem support, Node.js remains a top choice for backend development.