A Dynamic website is required for content such as online databases, e-business, collaborative content, membership, private areas, knowledge base,
a resume or jobs database, online shopping site etc. A dynamic web page is any web page which has content that is changed by a program or script
at the time the page is requested.
Dynamic website pages are pages that allow a user to set preferences regarding what kind of information will be displayed.
Dynamic pages are obviously beneficial, and although search engines may be able to index some of them, generally the pure volume alone is an inhibiting factor to most of the major search engines in the process of search engine optimization.