Jesse James Garrett posts an introduction to Ajax the application model that Google has used to develop their most recent hits – Google Suggest, Google Maps, and Gmail.

Truth be told, these technologies have been around for a while. The best article on all this is over at Apple’s site and was written way back in May 2004.

Flash developers are probably yawning over this too since, to a Flash web app developer, this isn’t a revolutionary idea – it’s simply the way things are done. And Flash developers can make requests across domains. Something that JavaScript can’t.

Still… this looks to open the door for all sorts of interesting UIs and if you already know JavaScript – you’re ahead of the game.