0 What Is Web 2.0?

Ask a dozen tech pundits to describe Web 2.0 and you're likely to get two dozen explanations as to what it is. The precise definition remains open to debate — and in some ways, that's exactly the point. This much is clear: Web 2.0 represents an important shift in the way digital information is created, shared, stored, distributed, and manipulated. In the years ahead, it will have a significant impact in the way businesses use both the Internet and enterprise-level IT applications.

As the name suggests, Web 2.0 describes a set of next-generation Internet technologies. These protocols and tools make it easier to create online applications that behave dynamically, much like traditional PC-based software. They're also highly social, encouraging users to manipulate and interact with content in new ways. Web 2.0 pushes computing power off the desktop and onto the Internet, which means less time and money spent on PC software administration. As a general rule, Web 2.0 tools are also less expensive than traditional software — and many are even free. Because they're Web-based, all you need to get started is an up-to-date browser.