Most websites have more than one page so we need some sort of navigation user interface. A navigation user interface might simply be some static links to the other pages. It might involve the use of menus or treeviews. No matter how the navigation user interface is implemented, a site's logical structure must first be defined (otherwise known as the sitemap). Prior to ASP.NET 2.0, developers typically created their own site navigation solutions. This is typically time consuming and expensive to maintain. ASP.NET 2.0, however, makes defining a site's structure and implementing the navigation user interface much easier. This video demonstrates the use of some of ASP.NET 2.0’s navigation controls in Expression Web.