Rich Web technologies debated

AJAX, Silverlight, Flex cited as key players in the increasingly crowded rich Web development technology space

While the landscape for rich Web development technologies is getting crowded, industry dignitaries at The Rich Web Experience conference in San Jose, Calif. Thursday nonetheless saw a place for the various entrants in this space.

The field of technologies has grown to include AJAX (Asynchronous JavaScript), Adobe Flex, Microsoft Silverlight, and Sun's JavaFX, said Neal Ford, application architect for Thoughtworks, who moderated a panel addressing rich Web development. Audience members also gave a nod to the Ruby, Python, and Groovy languages.

Panelist Scott Davis, an author and consultant, said he originally thought that AJAX would rule the world. "It runs in any browser," Davis said. But his horizons have expanded.

"Quite honestly, I've gotten really interested in Flex recently," Davis said. The recent open-sourcing of Flex has made it more attractive, he stressed.

AJAX drew affirmations with reservations from panelist Jon Ferraiolo, an IBM Web architect who manages the OpenAjax Alliance. "My perspective is that AJAX works today. It's fantastic, it does nearly everything you want to do except for multimedia types of things," Ferraiolo said.

"I think there's room for Flash, Flex; there's room for Silverlight. These things are going to be the cutting-edge applications that require the latest features," said Ferraiolo.

With the proliferation of mobile devices however, HTML browsing will not be available on all these systems, and the iPhone does not have Flash and probably will not have Silverlight either, said Ferraiolo. AJAX, however, is always there and is open and can be counted on, he said.

"There is a continuum of experience that needs to be looked at," said Josh Holmes, an evangelist at Microsoft who is speaking on Silverlight at the conference. There is the standards-based Web with HTML and CSS (Cascading Style Sheets) and there is AJAX, he said. Moving on, there are platforms optimized for a particular OS or hardware that can render 3D graphics, said Holmes.

"My personal opinion is that Silverlight and Flex are definitely on that heavy, rich but not quite platform-optimized edge," Holmes said. There are benefits to both, he said.

Another panelist sided with Flex for enterprise usage. "In the enterprise space, I tend to recommend things like Flex because the development is much faster to get up and going," said Bill Scott, AJAX evangelist at Yahoo.

"Creating a desktop style [application] in AJAX is still really hard," Scott said. AJAX does fit into a lot of areas, but none of the rich Web technologies will rule the world, he said.

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