Web sites are usually organized as offshoots of a single home page. In this structure, the home page contains a table of contents. All of the subsequent Web pages branch off this home page. Since hierarchical diagrams are so familiar in corporate life, users can easily build a mental image of the site. Usually each page will contain a link back to the home page.
Users follow their interests in any pattern they choose.
They work best for small sites, aimed at experienced users who want further information, as opposed to beginners who are looking for a basic understanding of your subject. This layout usually works best for most Web sites as it allows readers to browse through every page or just view pages of interest. Typically it combines the features of a hierarchical and a web layout.