Which one of the following statements describes the contents of the Configuration Management Database (CMDB)?
The configurations are stored in a configuration management database (ServiceNow CMDB) which consists of entities, called Configuration Items (CI), that are part of your environment. A CI may be:
https://www.servicenow.com/docs/bundle/xanadu-servicenow-platform/page/product/configuration-management/concept/cnfig-mgmt-and-cmdb.html