The aim of this guide is to equip its users with key messages, evidence and actions that can be used to advocate effectively to prevent HIV in girls and young women. It focuses on three goals that the global community increasingly recognizes as important components of the response to the epidemic: improving the accessibility of sexual and reproductive health services for girls and young women; expanding socio-economic opportunities; and ending child marriage. In turn, collectively the goals are divided into a total of 10 key messages.