What are the key features of Node.js?

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Accepted Answer

Single-threaded, non-blocking I/O — handles thousands of concurrent connections on one thread using the event loop. Built on V8 — compiles JavaScript to machine code for high performance. Event-driven architecture — based on the Reactor Pattern; reacts to events instead of blocking. Cross-platform — runs on Linux, macOS, and Windows. Huge ecosystem — npm, the largest package registry in the world. JavaScript everywhere — same language on frontend and backend. Fast and scalable — ideal for I/O-heavy workloads like APIs, real-time apps, and streaming. Built-in modules — fs , http , crypto , stream , cluster , worker_threads , etc. Supports modern JavaScript — ES Modules, async/await, top-level await. Active community and LTS support — regular releases with long-term stable versions. Don't just list features in a bullet-point fashion. For each feature, briefly explain why it matters practically. Connect features to real-world benefits like reduced latency, developer productivity, and ecosystem strength.