Dynamic Web pages work equally well on your Intranet, your public Web site, or your Extranet. They look just like static pages. But unlike their static cousins, dynamic pages do not really exist. Instead, they are conjured up on demand out of a set of instructions and data on your server. Static sites hit the wall when you try to make them evolve in unanticipated directions.
Dynamic sites are far more resilient to the buffets of change.
Because all sites are, or ought to be, in a constant state of evolution, dynamic sites are a genetically hardier species of Web sites. With a dynamic site, you can do things that used to require traditional applications. Moreover, you can add, update, and delete information, right away, about those clients or their matters through your browser. You can build in logic so your server will evaluate your content as the page is generating. This means that you can personalize your Web site to your needs.