CMS helps to separate design of web site from its content. It means designer develops a web site and gives it to its owner or manager who can fill a certain design with different content. If necessary the content of web site, its images and graphics can be easily edited without intervention into design of web site. All changes become visible as soon as you make them. (Don‘t forget to reload page after making changes). Even if you are not an expert of HTML coding, you can easily manage the content of your web site yourself.
Web site templates are also used for generating massive number of web pages by means of a schematic layout. Template based web designing is best when one requires building a site that has lots of pages and navigation link. It is ideal to use a web template if the site needs to be updated from time to time.