Arab Urban Development Institute (AUDI) is a scientific advisory institution that is concerned with all aspects of activities of Arab cities, especially municipalities. AUDI is an affiliate of the Arab Towns Organization (ATO), specializing in areas of training, research, consultancy, documentation and all that would foster and achieve the goals of ATO. AUDI is a non-governmental organization that does not aim to profit. Riyadh, Saudi Arabia is AUDI permanent headquarters.