Express is a straightforward and adaptable NodeJS framework.
Node JS is lightweight and effective for server environments.
Primary and most popular architectural style for Express apps is MVC (Model-View-Controller)
Node JS has a Single-threaded Event Loop design internally, which allows it to handle several concurrent requests quickly.
Express is primarily middleware and routing framework for building online, API, and mobile apps.
High performance and scalability can be provided to your application by Node.JS thanks to its asynchronous, non-blocking I/O operations.
When comparing NodeJS with Express JS, one of the key benefits of the latter is how simple it is to test; it provides all the tools required to quickly test the operation of your application.
You don’t need to worry about creating a directory structure for your application. This can make building tests for Node JS apps much simpler
Express JS takes a very simple approach and lets you add specialized features using middleware. and you can create web applications with Node.JS that run on everything from desktop computers to mobile phones. Node JS, is appropriate for most projects. Express.JS, on the other hand, is appropriate for product owners, CEOs, and CTOs who want to create an MVP to evaluate product-market fit.