"As far as hosting services are concerned, WordPress is a good
example. At its heart, WordPress is a simple blogging application,
and it can be used as such, but behind the basics of the ability to
blog comes an array of powerful features and the ability to extend
the functionality of your blog through the use of various
plug-ins.
"WordPress is based around at least two of the main components
of the LAMP (Linux Apache MySQL PHP) stack, and more usually in the
case of many hosting services all four. The two primary components
are MySQL (used to store blog information) and PHP. Both MySQL and
PHP are regularly supported as options by hosting services, so
supporting an application based on these two components is quite
straightforward..."