Drupal is an open-source web development platform for online content. It is a type of website built on a framework known as a content management system. A Content Management System is a combination of tools that are put together to help organize, maintain and enhance content which can be made of text, graphics, sounds, video, audio, etc. One of Drupal's greatest strengths comes from giving users the ability to securely edit their online content at any time without needing to know html.
With a dedicated CMS such as Drupal, it's strength comes from an approach which emphasizes flexibility through modularity, where modules are designed to work well with the core system and expand its capabilities. What this translates to is choice, which in turn leads to a high degree of customization.
Granville Island's Public Market recently launched their new website, http://gidva.org. The website is a fresh face to their previous one and is a full Drupal content management system allowing the 100+ vendors to advertise and showcase their wares. The CMS allows the vendors to enter all their information on one page, which is then distributed and presented in a simple yet elegant layout. Their pages feature full-screen images of their work plus the ability to update their content any time they choose.