What are the main concepts in the laravel framework?

I'm starting to use Laravel 5.1, I got knowledge in php, js, angular, express, node, apache, mysql, sqlserver, and some other things.

In Angular I like that everything is built as singletons, so that the main concepts are: modules, controllers, services, factories, directives, routes, views, scopes, etc...

I'd like to know what concepts do I need to understand when building an app under laravel?

via Chebli Mohamed