The Configuration Management Database (CMDB) is a tool used by many companies as a central data repository to store information about all technical services. It is a database that contains all the information about the applications and devices providing services in an organization. The CMDB provides a common place to store data associated with IT assets and configuration items (CIs) . The fundamental building block of a CMDB is the CI, which includes understanding what comprises a service or asset, how it is used, and how it is related to other assets and services. The CMDB stores the data in a Configuration of Items (CI) for each service provided within an organization. The support information for each service offering is stored in a Configuration Item (CI) specific to that service. The information includes the service name and description, assignment groups, change management approvers, and service roles, as well as other information directly related to the service support.

The CMDB is used to enhance the IT services of an organization. It provides the data required to support service management practices. Apart from Event and Incident Management, the CMDB gives information about the CIs that might be the root cause of a reported issue and gives an insight into the services that might be affected by a problem detected by the monitoring systems. ServiceNow CMDB provides a single source of truth for all the IT processes of your business, which allows you to plan and strategize your future actions with conviction and reliability.

In summary, the CMDB is a database that stores information about all technical services in an organization. It provides a common place to store data associated with IT assets and configuration items (CIs) and is used to enhance the IT services of an organization. The CMDB stores the data in a Configuration of Items (CI) for each service provided within an organization.