What is the role of a Data Controller?

The role of a Data Controller is primarily focused on managing personal data and making decisions regarding what data will be processed. This involves determining the purposes for which data is collected and the means by which it is processed. As the entity responsible for the data, the Data Controller ensures that all activities around data collection, storage, and utilization comply with applicable data protection laws and regulations. This responsibility encompasses establishing policies and procedures for data handling and ensuring that data subjects' rights are respected.

The other options highlight important aspects related to data management, such as data processing on behalf of the Data Subject, ensuring data privacy compliance, and overseeing data storage solutions. However, these functions fall under the broader umbrella of what a Data Controller does. The Data Controller's role encompasses oversight of these activities but specifically involves the authority to make decisions regarding data management, which is why identifying their primary responsibility as managing personal data and deciding what data is processed is accurate.