Urban forests play an increasingly important role in mitigating the effects of rapid climate change and improving the health and well-being of citizens around the world. However, proactive management of a city's tree population and quantification of its benefits often fail due to missing or inaccurate data. We are bringing the right data to the people who need it. At greehill, we digitize entire urban forests and provide a platform that empowers cities to map, monitor and analyze the current status of their urban forest and optimize the impact of urban trees on urban life. We enable data-driven decision-making to improve ecosystem services, thermal comfort, and operational efficiency.