This document provides an overview of Web 2.0 technologies and Microsoft's application platform for building Web 2.0 applications. It defines Web 2.0 as technologies that enable efficient interaction among people, content, and data. It demonstrates DeepZoom technology for seamless zooming of large images. It also discusses Microsoft technologies like Silverlight, ASP.NET AJAX, and WCF that support building rich web experiences with live APIs, services, and tools.