This document discusses data quality and use in immunization programs and the role of information and communication technology (ICT). It provides perspectives from JSI on improving routine data analysis and use at all levels for decision making. JSI emphasizes building on existing data tools but incorporating user-appropriate technology that allows bottom-up reporting and local data use. Examples are provided of countries that have integrated people, processes and tools through electronic logistics management information systems (eLMIS) to better summarize and generate immunization data electronically. The document also discusses the need for training health workers in data use, ensuring data quality and technology skills, and linking immunization data with supply chain management and community data.