Since 2008, the HIV and AIDS Data Hub has been providing decision-makers and experts high quality, accessible and up-to-date data on HIV in Asia and the Pacific. Working with many regional and national partners, we compile, update and analyse evidence on the HIV epidemic in Asia and the Pacific. In this region, HIV is clustered and concentrated among specific sub-populations, as well as within certain geographical areas in countries, hence the Data Hub prominently profiles subnational and key populations at higher risk data. Effective policies and interventions require the best available evidence, which is what the Data Hub aims to provide in one convenient web site.