How Node.js Fits Into Backend Development

This lesson positions Node.js within modern backend development. Students learn what a backend server is responsible for, why JavaScript can run outside the browser, and how Node.js helps teams build APIs, real-time features, command-line tools, and service integrations.

The lesson focuses on the role of Node.js rather than deep implementation. Express routing, database access, authentication, testing, and deployment are introduced only as parts of the backend landscape and saved for later lessons in the course.