Node.js is a runtime environment that allows the execution of JavaScript code on the server side. It's known for its event-driven, non-blocking I/O model, making it efficient for building scalable network applications.

Using Node.js for the backend server provides certain advantages. At instance, having both the frontend and backend written in the same language (JS) allows developers to create shared code modules. This, in turn, simplifies the integration between backend and frontend.

Additionally, adopting a single-language approach may potentially reduce developer resource costs, making maintenance process easier for business