Vanguard can be easily extended with different kinds of plugins. Each plugin is basically a Laravel package that extends some Vanguard classes and integrates into the application.
Each plugin can have its own API or Web routes, migrations and it's own views and controllers, just like any other Laravel package. This is why it is highly recommended to check the documentation for creating Laravel packages before you proceed with creating a Vanguard plugin.NOTE! Using plugins to extend the Vanguard application is highly recommended but it is completely optional. If you don't want to use plugins, you can modify the original Vanguard source files and implement any features you want.