The global aquaculture industry has seen considerable expansion in recent years, driven by rising consumer needs, a lack of growth from capture fisheries, progress in production technologies, and augmented investments from both private sector and governmental bodies. Presently, aquaculture is the world's fastest growing food sector and is anticipated to outgrow capture fisheries by 2027. Sustaining this growth will require continued industry support. Recognising this, the World Bank Group (WBG) has established a Global Aquabusiness Investment Advisory Platform (AquaInvest Platform) that aims to develop and disseminate best practices in aquabusiness development, with a view to ensuring economic prosperity, social well-being, and environmental sustainability. By nurturing innovation and collaboration, the AquaInvest Platform seeks to empower aquaculture practitioners, investors and governments to meet the challenges posed by stagnating fisheries production and the increasing demand for food from a rapidly growing human population. The guide describes the necessary requirements and enabling factors that need to be in place to stimulate aquaculture investment and business growth that is socially, environmentally, and economically sustainable. The guide is global in their geographic scope, and applies to all major aquaculture species groups, production systems and production scales.