Alibaba has a global scale infrastructure to support its various types of online services (e.g. e-commerce, cloud computing, e-payment, etc.), which have more than one billion users in total. This infrastructure has O(10) core data centers, O(100) PoP (point of presence) nodes, O(1000) edge sites across 23 geographical regions, and 69 availability zones over North America, Europe, Asia, and Oceania (see https://www.alibabacloud.com/global-locations).