Node.js is a very popular open-source framework that functions as an execution environment on the server side and is centered on Javascript. It claims its popularity as a potentially highly scalable platform for the usage of a single-threaded process for web loading and the programming known as asynchronous. In addition, we can improve the backend capabilities of a project using Node.js frameworks inside it. Some examples of these frameworks are Socket.io, Express, and Meteor.js. This tech is notable for its ability to construct complex SPAs, web apps that stream media, Real-time apps, Servers, streaming apps, and Backend APIs. Trello, NASA, Netflix, etc are some web apps that use node.js.
Express.js, often known simply as Express. It is a backend framework designed based on Node.js. Express gives users the flexibility to develop websites more quickly and effectively. It provides codes, packages, plugins, and routing capability. Express.js is in javascript. Stacks MEVN, MERN, and MEAN include Express. In fact, the framework makes it possible for third-party libraries and functionalities to integrate. This simplifies the customization process. Lastly, this technology is renowned for building reusable and Single-page applications, Web Apps, e-commerce web apps, Commercial apps, customized web apps, RESTful APIs, and web server. Popular apps like Twitter, IMDB, Accuweather, Uber, etc. use Express.