How to Organize All Your Routes in a Single Layer in Node.js

In complex Node.js applications using Express, managing routes can become unwieldy as the project expands, leading to messy code due to the merging of endpoint logic and route associations. A Node.js routing layer addresses this issue by separating the API business logic from routing logic, enhancing maintainability, middleware management, and API versioning. The routing layer involves organizing route-handler functions in controller files and associating them with routes in distinct router files, stored in dedicated directories within the project architecture. This separation allows for more readable and organized code, streamlines middleware specification, and facilitates easier API versioning by keeping route definitions close together. Implementing a routing layer involves creating specific directories for controllers and routes, moving relevant code into these files, and dynamically importing router objects to the main application file, which maintains scalability and reduces error-proneness. The tutorial guides users through restructuring an Express application to incorporate a routing layer, demonstrating its benefits for tidying the codebase and enhancing the maintainability of Node.js backends.