Next.js version 9.4 offers an all-new hot reloading experience with its Fast Refresh feature that responds immediately towards your edits in your React components.
Instead of creating files for all pages, next.js is a JavaScript-based React framework that allows you to create different routes and work with the query data to dynamically create pages. That’s the phenomenon of dynamic routing in next.js.
Next.js is a react framework for building static pages, progressive web apps, and server-rendered applications. And the easiest way to get started with next.js app development is using their create-next-app.