Express

Express.js is the fast, unopinionated, and de facto standard web application framework for Node.js (JavaScript backend).

Express.js is your core for building scalable web applications and robust APIs on Node.js. It’s a minimal, flexible framework: it handles routing, HTTP utilities, and the request/response cycle efficiently. We leverage its massive middleware ecosystem for added functionality like cookie parsing or authentication (e.g., Passport.js). As the 'E' in the popular MEAN, MERN, and MEVN stacks, Express provides the proven, high-performance backend layer for modern JavaScript development.

https://expressjs.com