Owing to its single-threaded architecture, Node. js is typically used for non-blocking, event-driven servers. Although it was created with real-time, push-based designs in consideration, it is utilized for conventional web pages and back-end API functions.
Developers frequently presume that Node.js is solely used to create servers and is, therefore, a backend framework. This is untrue; Node.js can be used at both the front and backend.
A lot of popular companies have been using Node.js, some of which are LinkedIn, PayPal, NASA, eBay, Trello, Medium, and more.