Description: Express middleware is a fundamental component in the Express.js framework, designed to facilitate the creation of web applications in Node.js. It refers to functions that have access to the request object (req), the response object (res), and the next middleware function in the processing chain. These functions can perform various tasks, such as modifying the request and response, ending the request, or calling the next middleware function. The use of middleware allows developers to structure their code in a modular and reusable way, improving maintainability and readability. Additionally, middleware can be used to manage authentication, data validation, error handling, and route configuration, among other functionalities. In summary, Express middleware acts as an intermediary that allows for efficient and organized management of data flow and application logic.
