* :doc:`/book/architecture/architecture`
* :doc:`/book/architecture/resource_layer`
* :doc:`/book/architecture/state_machine`
* :doc:`/book/architecture/translations`
* :doc:`/book/architecture/emails`
* :doc:`/book/architecture/contact`
* :doc:`/book/architecture/fixtures`
* :doc:`/book/architecture/events`
