As a major force in the world of affordable, advanced web site deployment, Joomla! has become the most important noncommercial Content Management System (CMS) in the world. The number of Joomla! downloads and add-ons continues to grow at lightning pace, spurring the need for a resource that explores the diverse needs of professional Joomla! developers. This book fills that void by covering the two main areas of the Joomla! field--development and deployment--with a focus on the new Joomla! version 1.5 and all the features it provides. Seasoned author Dan Rahmel walks you through the process of creating all three types of Joomla! extensions (modules, components, and plug-ins), explains how best to use Ajax technology, and shows you how to adopt design patterns and incorporate source code control. You'll examine the underlying technologies (PHP, Apache, etc.) that can be tuned to offer the best system performance, and you'll explore interfacing with outside co...