CMDB, or Configuration Management Database, is a centralized repository that stores information about all the assets and configuration items within an organization's IT infrastructure. It serves as a comprehensive and up-to-date record of hardware, software, network devices, applications, and their interdependencies. The CMDB provides a foundation for effective IT service management by enabling organizations to track, manage, and control their IT assets and configurations. It helps in maintaining accurate and consistent information, supports change management processes, facilitates incident and problem resolution, and aids in understanding the impact of changes on the overall IT environment. By leveraging CMDB, organizations can improve operational efficiency, reduce downtime, and enhance decision-making related to IT infrastructure management.