Websites are created for different purposes, vary in design and      functionality. Internet provides surfers with thousands of samples, starting with plain content sites and up to complicated online-systems with plenty of functionality and features.

In spite of this some common components can be marked out as being traditionally included in the website. Of course not all of them are obligatory on your site.

Here goes the brief explanation of Back End Elements:

• Back End elements. Some websites are entirely static. They are the same every time you visit. You never give them information, there are no polls, bulletin boards, or referral forms. If you want to find something on the website, there is no search box, you just look around until you find it. But such sites are growing more rare as the internet becomes an ever greater part of people’s lives. Modern sites are searchable. They offer new images on each visit. They allow the user to request more information, or to post their own thoughts. Many can be updated directly from a simple panel or word-processing program. A lot of websites are data driven, meaning that web pages are actually created on the fly, in response to the specific needs of the user. All of these functional elements are called back-end elements. In some cases there are many different ways to do the same thing. So the line between elements is often blurry.
• Content Management System. This is the ability to update your website without having to directly edit the html. A robust content management system allows for documents to be prepared, edited, approved, and tracked prior to publication. Simple systems create areas on a web page that can be easily changed on a regular basis.