When to use Ajax and Flex?

Use AJAX:

• To make incremental usability enhancements to an existing Web site

• For building "widgets" that require the work of a small team of developers

• When you have existing, internal JavaScript and HTML expertise

Some examples of AJAX-appropriate uses could be navigational elements, simple calculators and client-side validated forms.

Use Flex:

• When you need to develop applications that require a robust, scalable rich Internet application

• Where you require sophisticated and interactive data visualization

• When video and audio playback or Web camera and/or a microphone capture is a requirement

• Where you require complex animation or bitmap manipulation

• When the graphic design is core critical to your business needs

Flex would be the right choice for product configurations, workflow/process/inventory management applications, video conferencing, playback and editing, immersive or entertaining experiences, data visualizations and management dashboards. Additionally, in real-world use. Flex typically requires less coding to build the same or better functionality. The learning curve is somewhat steeper, but the development times are significantly lower.

Thanks
A.T.J