Concern

HTTP server: the layer that listens for and serves HTTP requests (transport).

Technology

Express

Documentation

• Website: https://expressjs.com/
• Repository: https://github.com/expressjs/express
• Getting started: https://expressjs.com/en/starter/installing.html

Integration

framework / NestJS

NestJS uses Express as the default HTTP adapter via @nestjs/platform-express. The framework provides routing and controllers; Express handles the underlying HTTP server. Distinct from runtime (Node.js) and framework (NestJS application structure).