The Information and Communications for Development report takes an in-depth look at how information and communication technologies (ICT) are impacting economic growth in developing countries. This new report, the fourth in the series, examines the topic of data-driven development, or how better information makes for better policies. The objective is to assist developing country firms and governments to unlock the value of the data they hold for better service delivery and decision making, and to empower individuals to take more control of their personal data. The chapters of the report explore different themes associated with the supply of data, the technology underlying it, and the demand for it. The concluding chapter considers government policies for data, including data protection and privacy.