WWW service (n)~ The service that manages the IIS core components that process HTTP requests and configure and manage Web applications. Formerly known as W3SVC. WWW Service Administration and Monitoring component (n)~ A component of the World Wide Web Publishing Service (WWW service) in IIS that is responsible for configuration by means of the metabase and for worker process management. WYSBYGI (n)~ Providing a preview of the effects of the changes the user has selected before finally applying them. For example a dialog box in a word processing program might display a sample font a user has chosen before the font is actually changed in the document. The user can cancel any changes after previewing them and the document will be unaffected.