Your WebSphere® Application Server product environment includes web server plug-ins, WebSphere Application Server variables, and other data objects. Configure values for settings in these categories using the Environment section of the administrative console.
For more information, refer to Introduction: Web servers.
For more information, refer to Introduction: Cell-wide settings.
Variables come in many varieties. They are used to control settings and properties relating to the server environment. The three main types of variables that are important for you to understand are environment variables, WebSphere variables, and custom properties.
For more information, refer to Introduction: Variables.