When I first started developing with AngularJS keeping my controllers and directives in separate .js files for better maintainability I ended up including lots of .js files on my pages. This approach has led to some obvious drawbacks. For example, each of these files will have to be minified or combined before deployment to save bandwidth. There's also little control over load order and inter-dependencies between them, like AngularJS must be available before module can be created, and module must be present before one could attach controllers to it. So was looking for a clean solution to this problem, and that's where RequireJS came in.