The answer
No, not as the norm. Modern Node.js uses async/await and promises. Callbacks still exist for backward compatibility, but new code uses async/await for clean, readable async code.
Common Node.js Myths and Misconceptions Debunked
Does modern Node.js still use callbacks?
More FAQs in Common Node.js Myths and Misconceptions Debunked
Yes. Node.js runs JavaScript on a single thread, but uses a thread pool for blocking work and is designed for high concurrency through non-blocking I/O. It scales very well for I/O-bound work like APIs and real-time apps.
No. Netflix, LinkedIn, PayPal, Walmart, and many large companies use Node.js in production. It is not just for prototypes; it powers real, large-scale systems at major enterprises.
No. Node.js is a runtime, an environment that runs JavaScript. Express is a framework. Mongoose is a library. Node.js is the runtime that runs them all.
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