The Data Warehouse in Zambia's health sector enhances decision-making for policies and programs by ensuring data interoperability among various systems, including iHRIS, eLMIS, lab information systems, and DHIS. It employs a robust Extraction Transformation Staging Quality assurance & Loading (ETSQL) framework to integrate and ensure the quality of data, facilitating effective decision support on its platforms. Key health focus areas addressed include communicable diseases, vaccination/immunization, sexual and reproductive health, health promotion, maternal and child health, non-communicable diseases (NCDs), and others.