Data governance contributes to organizational effectiveness by establishing a framework for managing data integrity, availability, and security. It involves defining roles, responsibilities, and processes to ensure data is accurate, consistent, and accessible. Effective data governance minimizes risks associated with data breaches and compliance violations, fostering trust among stakeholders. Additionally, it enhances decision-making by ensuring that high-quality data is available for analysis. Organizations can leverage data governance to align their data management practices with business objectives, ultimately driving performance and competitive advantage.