State policymakers with responsibility for early childhood services have long faced a serious obstacle: the information they have about the early childhood system is limited and fragmented. New technology creates new opportunity for those state leaders, as it is now more feasible than ever to integrate data from multiple sources to inform decision-making. This report is meant to assist those policymakers in understanding what’s possible, and in managing the process of developing a more effective Early Childhood Integrated Data System (ECIDS). (author abstract)