就如同先前的版本一般，Joomla! 提供一個整合又易於使用的架構，來遞送任何形式之網站的內容。為了能支援網際網路千變萬化的本質和新起的網路科技，Joomla! 需要大幅度地重新整建它的核心功能，並且我們也藉此機會來簡化目前使用者介面所面臨的許多挑戰。Joomla! 1.5 因此含有不少新功能特性。

In Joomla! 1.5, you'll notice:

• Substantially improved usability, manageability, and scalability far beyond the original Mambo foundations

• Expanded accessibility to support internationalisation, double-byte characters and right-to-left support for Arabic, Farsi, and Hebrew languages among others

• Extended integration of external applications through Web services and remote authentication such as the Lightweight Directory Access Protocol (LDAP)

• Enhanced content delivery, template and presentation capabilities to support accessibility standards and content delivery to any destination

• A more sustainable and flexible framework for Component and Extension developers

• Backward compatibility with previous releases of Components, Templates, Modules, and other Extensions