This article was published on December 4, 2024 in Vaccines. This study investigates the use of microplanning as a tool to enhance immunization coverage and equity. There is limited evidence on how microplans are developed and implemented and the effectiveness of microplanning. As such, this study sought to review the existing evidence on implementation and institutionalization of microplanning; identify strategies to improve microplanning; and document evidence on new approaches to microplanning, including digitally enhanced and integrated microplanning.