PAIR, the mobility brand of Aspiring Citizens Cleantech, provides world-leading big data operating system (OS) for digitalising and electrifying city’s fleets. In a plug-and-play ease of scaling, PAIR’s cloud-based OS now processes data of about 2.8 million taxi and ride-hailing trips, and serves 4 major Chinese cities of more than 60,000 taxis (30,000 of which are electric vehicles).