Conservation Agriculture (CA) has achieved global recognition as a sustainable land-use concept grounded in three basic principles: minimal soil disturbance, permanent soil cover, and planting diversity. Its global expansion is a response to concerns with soil degradation, tillage erosion, climate change, and food insecurity, and in 2019, CA was adopted on more than 205 million hectares overall. In North America, the United States championed the expression of CA due to the Dust Bowl crisis and made soil conservation a federal commitment. Today, the United States still leads the way in no-till systems, cover crops, and precision agriculture through ongoing federal research and policy initiatives. South America also implemented CA on a large scale in Brazil, Argentina, and Paraguay, which has impacted their soybean-maize systems, reducing erosion and contributing to soil carbon. In Africa, South Africa and Morocco have also incorporated and adapted CA to local conditions to improve drought resistance and increase the stability of production through their cereal systems. In Asia, a zero-till wheat production system in India has expanded productivity and resource-use efficiency through government and international collaboration. In Australia, CA innovations in machinery and water management have sustained yields in systems during drought years, with lower input costs. Europe (Spain, France) has also more closely integrated CA with agroecological goals and soil carbon, with CA being more widely discussed and further positioned into climate-smart farming. Despite its proven benefits, CA adoption remains constrained by technical, socio-economic, and policy barriers. Overcoming these requires integrated strategies—financial incentives, adaptive extension services, and stronger alignment with agroecology and circular economy principles. CA thus represents a scalable, climate-resilient pathway to sustainable, regenerative food systems worldwide.