The main role of a data protection officer (DPO) is to ensure compliance with data protection regulations, like the GDPR (General Data Protection Regulation). The DPO oversees the organization's data protection strategy and implementation, ensuring that personal data is handled responsibly and securely. This includes conducting data protection assessments, monitoring compliance, and serving as a point of contact for data subjects and regulatory authorities. The DPO plays a critical role in protecting individuals' privacy rights and fostering a culture of data protection within the organization.