ECI identified early on that a strong, well-coordinated infrastructure — balancing public and private participation — is the foundation for systemic improvement in early care, health, and education services. Specifically, ECI legislation called attention to the importance of accountability to ensure children and families receive the services they need, when and where they need them. Such a system not only required committed stakeholders who cross system boundaries, but also that these stakeholders are equipped with comprehensive information that highlights strengths and gaps, and points to coordination opportunities. An integrated administrative data system approach was identified to meet this need.