Flex is an application framework (yes it is a framework!!) that allows developers to build rich APPLICATIONS for desktop (using AIR), web, mobiles and tablets (iOS, android, blackberry etc). The web applications (SWF Files) run in Flash Player which is available in more than 90% computers across the world. For desktop-based applications AIR is needed. There are two main BUILDING blocks for development in Flex: ACTIONSCRIPT (USED mainly for Logic part) and MXML (used mainly for DECLARATION of tags and components etc).

Flex is an application framework (yes it is a framework!!) that allows developers to build rich applications for desktop (using AIR), web, mobiles and tablets (iOS, android, blackberry etc). The web applications (SWF Files) run in Flash Player which is available in more than 90% computers across the world. For desktop-based applications AIR is needed. There are two main building blocks for development in Flex: ActionScript (used mainly for Logic part) and MXML (used mainly for declaration of tags and components etc).