One in two women in Spain report that they have experienced violence. In 2004, the Government passed a comprehensive protection measures law to address gender-based violence (GBV) across the country. Ms. Itziar Abad Andújar is the Deputy Director General for Awareness, Prevention and Studies of GBV at the Government Delegation against GBV. Here, she explains why the collection and analysis of administrative data is crucial in preventing, responding to, and eliminating violence against women (VAW) in Spain and around the world.