In the client/server architecture, Express.js represents the server and manages all HTTP communication with all clients making requests. When doing this, Express.js interprets the client request, deconstructs it, and creates its own internal representation of the request in the form of a JavaScript object. This object can then be used within the Express.js application to access all information about the request.

This video introduces you to the method in which Express.js handles and manages HTTP requests and responses through what is called a ‘router’.

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