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Better animations
Better integration & modifications of video and sound
Better user experience
Less compromise
Developing a Flex application is different from developing an application in Flash Professional 8 from Adobe, even though in both environments the application is compiled into a SWF file.You create a Flex application in text files, which you can create and edit in a simple text editor or a more sophisticated development environment, such as Flex Builder. You compile your application into a SWF file, and then publish the application on a web or application server.You create a Flash document file (a FLA binary file) in the Flash Authoring environment, and save it as a SWF file before publishing it to a website; it is usually referenced inside an HTML page. Flash Professional uses concepts such as the Timeline, animation frames, and layers for organizing and controlling an application’s content over time.In Flex, you write the declarative parts of an application, such as user-interface components and connections to data sources, in MXML tags. You must use the tags in the proper hierarchy within the application, but there is no external notion of Timelines, frames, or layers. Just by using a few MXML tags, you can create a useful application with built-in behavior.Although the development models for Flash and Flex are different, Flash is a powerful tool for creating custom components and visual assets that you can use in Flex applications. You can export files created in Flash in component package files called SWC files, which you can reference as custom tags in MXML files. You can also use the MXML
