I follow the W3C standards when writing a XHTML / CSS code to have a valid code. Static Web sites can only really be updated by someone with a knowledge of website development. Static Web sites are cheap to develop and host, and many smaller companies still use these to get a web presence.

Dynamic Web sites are easier to maintain, upgrade, and build upon than statically made sites. They respond to different parameters (for example, the time of day or the version of the visitor's Web browser). They also have a "memory", allowing for users registration and login, e-commerce, and similar processes. The combination of PHP, Apache, MySQL, powered by Zend Framework is my favorite way to develop dynamic Web sites.

Content Management System (CMS) simplifies mainteinance of web sites. CMS serves to update web contents, insert images and articles to the site without a need of writing a code. I have experience with open-source CMS such as Drupal, Joomla, and Wordpress. I will be working on developing my own custom-made CMS in the near future.