Alibaba’s City Brain project wants to help governments manage cities in China -- and beyond
City Brain runs on an enormous amount of data collected by the government

In Hangzhou, a network of surveillance cameras are watching every vehicle on the streets -- before feeding it to a computing system that analyzes the footage to issue commands meant to reduce traffic.
The platform, City Brain, is made by Alibaba’s cloud computing arm Alibaba Cloud, and adopted by six local governments in China including the eastern cities of Hangzhou and Suzhou.
(Abacus is a unit of the South China Morning Post, which is owned by Alibaba.)
City Brain is used mainly to improve traffic flows and incident response, using data provided by local traffic police, government authorities, and other tech companies like facial recognition startup Face++.

Traffic police in Hangzhou -- Alibaba’s home city -- have given City Brain power to take control of some traffic lights, so that it can change them when needed for maximum efficiency. Alibaba says it’s now controlling 24 traffic lights in downtown Hangzhou and 104 in the Xiaoshan District.