The Vietnam National Immunisation Information System (NIIS) has proven to stand the test of time and adversity throughout the 12-year journey of digital transformation from the paper-based system. The system journey was certainly not without difficulties, challenges, and even failures, and PATH is honored to accompany Vietnam National Expanded Program on Immunisation (NEPI) along this past decade from the mere cradle of VaxTrak (for vaccine and stock tracking and management) and ImmReg (electronic immunization registry) throughout their pilots, integration into the one comprehensive NIIS, more pilot, adaptation, improvement, upgrades, nationwide scale-up, and transition to electronic reporting. The system journey continues as the country is striving to complete electronic reporting consistently in all 63 provinces in Vietnam. In this webinar, PATH would like to share experiences and lessons learnt on EIR implementation in Vietnam to other countries in the region focusing on the phases of nationwide scale-up and paperless transition.