You have now built a very simple application using some of the most commonly used Zend Framework components. Zend Framework makes many components available to you which address most common requirements in web applications, including web services, search, PDF reading and writing, authentication, authorization, and much more. The Reference Guide is a great place to find out more about the components you've used in this QuickStart as well as other components. We hope you find Zend Framework useful and - more importantly - fun!