This provides a wide range of benefits including:
Versatile page design
Web sites are quick to set up by starting with one of the many freely available Drupal themes. The theme can then be adapted as required.
The design can also easily be adapted from a professional mock-up or from an existing web site.
The layout of the site's pages, menus and blocks of content can be easily changed.
There are numerous Drupal modules that can be incorporated into the web site to provide additional features. These include image galleries, slide shows, forums, newsletters etc.
Search Engine Optimisation (SEO)
Drupal is designed with SEO in mind. It also has a number of modules that add features that work towards inproving your placement in search results.