Jubail Industrial City in Saudi Arabia now operates the world's largest integrated smart irrigation system, managed by a unified control center overseeing more than 12,200 smart devices. This advanced network processes around 1.2 million signals daily and spans over 11,600 kilometers of pipelines. The system is recognized as a national model for environmental sustainability and digital transformation, aligning with the country's long-term vision for smart cities and resource management. By recycling treated water for irrigation, the city has reduced operational costs by over 35 percent and supports efforts to increase vegetation and combat climate change, in line with national and regional green initiatives.