Express Routing & Connected API

• index.js - Entry Point
• server.js - Hub, Exported Server
• models/categories.js, etc - Data Models
• routes/categories.js, etc - Routers and Handlers

Routes

• Use express.Router() multiple times to define groups of routes
• Apply the express.Router() to a section of our site using app.use()
• Use route middleware to process requests
• Use route middleware to validate parameters using .param()
• Use app.route() as a shortcut to the Router to define multiple requests on a route