Ajax의 특징을 찾아보다가..

잘 정리된 사이트가 있어서 퍼왔습니다.
'Pete Freitag'님의 글이구요. 원본은 다음의 사이트에서 보실 수 있습니다. 출처 : http://www.petefreitag.com/item/514.cfm

What is AJAX?
• Asynchronous JavaScript + XML
• XMLHttpRequest Object
• A geek marketing term
• Rich Internet Applications with JavaScript

Examples of AJAX
• GMail
• Google Maps
• Basecamp

Is it new?
• Not Really
• Hidden Frames
• IE5+, Mozilla 1.0+, Safari 1.2+, and Opera 7.6+

Why is it popular?
• Google helped popularize, and legitimize it in GMail
• Increase Usability of Web Applications
• Rich Internet Applications without Flash
• Save Bandwidth
• Download only data you need
• Faster interfaces (sometimes)

Why is it bad?
• Breaks back button support
• URL's don't change as state changes
• Cross Browser Issues can be a pain
• JavaScript may tax older machines CPU
• Can't access domains other than the calling domain
• May be disabled (for security reasons) or not availiable on some browsers

Flash vs AJAX
• No plugin for AJAX
• Flash development tools cost money
• Flash typically has slower page load time
• Flash can work on older browsers
• ActionScript doesn't havea cross browser issues
• Flash can access other domains if there is a crossdomain.xml file

그러면, Flash의 단점은?
개발비용이 비쌉니다. Flex만 해도 구입하려면 cpu1당 2,800정도 든다고 하더군요. 등등등 ^^;;;