Collaboration business information systems are used by all levels of employees. As the name implies, collaboration BIS supports the efforts of groups of employees working to achieve common goals. Collaboration BIS are a little different than the Operational and Managerial categories in that the focus is not more on input, processing or output. Also Collaboration BIS sub-categories tend to build on each other rather than adhere to distinct divisions. Collaboration BIS are categorized into three levels: Communication, Content Management and Workflow Control.