This document summarizes 30 years of progress in HIV/AIDS research and leadership by the National Institute of Allergy and Infectious Diseases. It discusses advances in prevention technologies for reducing HIV incidence, including antiretroviral treatment, pre-exposure prophylaxis, medical male circumcision, sexually transmitted infection treatment, microbicides, HIV vaccines, and their estimated effects. The goals of this research are reducing new HIV infections, increasing access to care to optimize health outcomes, and reducing disparities related to HIV.