Tracking and accelerating HIV incidence reduction is the most pressing concern for the global HIV community. If we are to achieve epidemic control, the ease with which we attain and understand epidemiological estimates must improve. This session is targeted towards delegates interested in understanding where we are at and where we are going in achieving precision in our understanding of HIV epidemiology to inform programming. The 40-minute pre-recorded session will provide an introduction to the Measurement & Surveillance of HIV Epidemics (MeSH) and HIV Modelling consortia, including examples of some recent work on HIV & COVID-19. There will also be a presentation, focusing on Malawi, on how new technologies may be utilised in monitoring and measurement activities. The 60 minute live session consists of two presentations from leading experts, addressing critical questions and new methods for attaining robust, sustainable HIV-epidemiology estimates in southern Africa. These will be followed by a panel discussion.