Contents
	Scale, by Thomas Claburn
	Content Management, by Thomas Claburn
	Security, by Charles Babcock
	Lightweight Development, by Charles Babcock
	The User Experience, by Aaron Ricadela
	Communities, by Aaron Ricadela
	Interactive Timeline: A Brief History Of Web 2.0

Search, photos, music, video, mash-ups, wikis, blogs, communities, high-resolution images from the heavens--they're the rich content behind the Web 2.0 phenomenon. But the emerging next-generation Web is about more than content; it's about more interesting user experiences, all through the window of a browser.

So how do you create interactive Web sites that play in this world? And what's the business model behind them? Business and technology leaders, including Amazon .com's Jeff Bezos, Microsoft's Ray Ozzie and Debra Chrapaty, Google's Eric Schmidt, Salesforce.com's Marc Benioff, and Skype's Niklas Zennstrom, will take up those subjects this week at the Web 2.0 Conference in San Francisco. This much we know: Web 2.0 requires a software and server infrastructure and IT architecture that are very different from Web sites of the past. Following is a discussion of six such areas: scale, content management, security, development techniques, user experience, and community. Web 2.0 companies now have more options and technologies for dealing with them all.