This presentation provides information on how PATH IDEAL successfully scaled up electronic immunization information systems in Vietnam. PATH’s The Introducing Digital Immunization information systems–Exchange And Learning from Vietnam (IDEAL-Vietnam) project, funded by the Bill & Melinda Gates Foundation, has been working closely with Vietnam’s Ministry of Health (MOH) to facilitate a successful transition to an entirely paperless immunization system and generate and share evidence-based and data-driven learning and experience from Vietnam to inform, influence, and accelerate the successful implementation of similar tools in other countries and contexts.