KDDI Corporation provides telecommunications services in Japan and internationally. It operates in two segments, Personal Services and Business Services. The Personal Services segment offers smartphone, mobile phone, and other mobile communication services, as well as fixed-line services under the au Hikari brand; MVNO services; and mobile services under the au brand. It also provides smartphone-centric payment, financial, and other services through au PAY gateway; au HOME, an IoT service that watches over pets using sensors and cameras; au Denki to conserve energy usage; AEON, an English conversation school. The Business Services segment offers data center services to corporate customers under the TELEHOUSE brand; and various solutions for internet exchanges, telecommunications carriers, and cloud providers. The company was incorporated in 1984 and is headquartered in Tokyo, Japan.