Metro Manila has many central business districts (CBD), which categorizes it under the multiple nuclei model in human geography terms. The most prominent CBDs are the Makati Central Business District, Bonifacio Global City, Ortigas Center, Binondo, and Alabang. The region also has plenty of mixed-use developments owned and developed by private corporations such as the Ayala Corporation, Eton Properties, Megaworld Corporation and SM Prime Holdings.