On Wednesday, 2 April, the Linked Immunisation Action Network (Linked) facilitated a learning discussion for countries and practitioners who are struggling to incorporate disparate data sources and harmonize data standards across their existing digital immunisation systems, including electronic immunisation registries (EIR). The webinar featured the WHO’s SMART Guidelines and the new Digital Adaptation Kit (DAK) for immunisation, released in January 2025. Natschja (Nat) Ratanaprayul, Technical Officer at WHO who coordinates the SMART Guidelines programme and works with countries to implement DAKs across multiple health areas, showcased the 5-layer framework which establishes benchmarks and standards for digital health systems and reduces time and resources spent adapting and implementing EIRs.