Who is responsible for using the data and ensuring its proper management?

The role of ensuring proper management and use of data is primarily associated with the data owner. The data owner is responsible for the overall integrity, security, and usage of the data. This includes determining access permissions, establishing data governance policies, and ensuring that the data is managed according to compliance regulations.

The data custodian, on the other hand, is responsible for the technical aspects of managing and safeguarding the data, such as storage, backup, and maintenance, but does not have ownership or decision-making authority over its use. Data users are the individuals who access the data for various purposes and rely on the data owner to provide access rights and data that is correctly managed. The chief information security officer (CISO) oversees the entire security framework within an organization but is not specifically tasked with the management of data in terms of ownership or usage.

Thus, the focus on who has the ultimate responsibility for using and managing data effectively points to the importance of the data owner role.