A wiki is a website that allows the easy creation and editing of any number of interlinked pages. A Wiki can be thought of as a combination of a Web site and a Word document. At its simplest, it can be read just like any other web site, with no access privileges necessary, but its real power lies in the fact that groups can collaboratively work on the content of the site using nothing but a standard web browser. It is platform independent, and changes the dynamic of group editing from "pushing" a document out to multiple people and to "pulling" those people together.
Beyond this ease of editing, the second powerful element of a wiki is its ability to keep track of the history of a document as it is revised. Since users come to one place to edit, the need to keep track of Word files and compile edits is eliminated. Each time a person makes changes to a wiki page, that revision of the content becomes the current version, and an older version is stored. Versions of the document can be compared side-by-side, and edits can be "rolled back" if necessary.
If you are looking to use a wiki for something other than an official Banner related course, please fill out this form (login required).