When your FrontPage Web site is server-based, you work directly on the Web server. When you save your pages, the site is immediately updated.
A server-based Web site is a site you create and work with directly on a Web server. That's right — the site is on the server, not on your computer.
This means that as soon as you save your changes, they will be seen immediately on the World Wide Web. Some people refer to this as working with a Web site "in real time" or "on the fly."
Note To use a server-based site, your FrontPage Web site must be on a server running FrontPage Server Extensions or SharePoint Services.