Why is Express so popular?
It is minimal, flexible, has a huge ecosystem, is documented everywhere, and is easy to hire for. It scales from small to large projects and gives you full control over architecture.
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More FAQs in Express vs Other Node.js Frameworks: When to Use What
Express for flexibility and ecosystem. Fastify for speed and built-in validation. Koa for cleaner async. NestJS for large teams that want conventions. Pick based on what your project and team need.
When performance is critical, you want built-in schema validation, and you are OK with a smaller ecosystem than Express. Fastify is significantly faster and has good DX.
When you have a large team and want conventions, you are building a complex app with many modules, and you like TypeScript with Angular-style architecture. NestJS has a steep learning curve and is heavier for small apps.
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