Silicon Valley Watcher has a report by Jonathan Boutelle:
The emerging theme from the summit was that AJAX is not rocket science. While building an application like Google Maps is huge technical challenge, adding a little bit of AJAX spice to an existing production website can take as little as a few weeks.
Derek Powazek of Technorati, Eric Costello of Flickr, and Dustan Orchard from Odeo showcased the next versions of their sites, which have several improvements that would have been impossible without AJAX techniques. One of the few statements that this (often contentious) group managed to rally around was the idea that “AJAX is only rocket science if you are building rockets.”
Technical frameworks for making AJAX development are cropping up like mushrooms after a rainstorm. Of the many developments, the most compelling is clearly Ruby on Rails. Rails is a rapid web application API that already has remarkable momentum. David Heinemeier Hansson, the amiable Dutch mastermind behind the rails framework, gave a nice overview of how Ruby on Rails makes AJAX websites easy to develop. Other free technical frameworks like SAJAX (simple AJAX) are available, and new frameworks are cropping up every day, so it may take some time for the market to sort through these offerings an settle down on a manageable number of toolkits.