The conference attracted a large number of nationally and internationally well-known experts who have been at the forefront of water resources management and sustainability in arid and semi-arid regions. More than 55 countries, covering the five continents, were represented. The conference was designed to facilitate and encourage new perspectives on how science and innovative technologies can transform water management and sustainability in arid and semi-arid regions around the world. It addressed current challenges and priorities in water management and provided a forum to share knowledge, experiences, research, and discoveries.