KDDI 

KDDI Corporation is a prominent telecommunications firm headquartered in Tokyo, Japan, offering a broad spectrum of communication solutions to both domestic and international markets. Its business is strategically divided into two core segments: Personal Services and Business Services. The Personal Services segment delivers mobile communication services, encompassing smartphones and other mobile devices under its "au" brand, along with MVNO offerings. It also provides fixed-line broadband solutions through its "au Hikari" brand, which includes fiber-to-the-home (FTTH), cable television (CATV), voice, and data transmission. Additionally, this segment extends into consumer-centric lifestyle services such as mobile payment and financial offerings via "au PAY," IoT solutions like "au HOME" for pet monitoring, "au Denki" for energy management, and educational services, including the AEON English language school. Conversely, the Business Services segment targets corporate clients, providing high-quality data center facilities through its "TELEHOUSE" brand, as well as integrated network, cloud, and device solutions. This segment further diversified into various business support services, including broadcasting, wireless broadband, e-commerce, IT assistance, call center management, and temporary personnel services. KDDI also plays a critical role in the design, construction, maintenance, and operational support of communication infrastructure, notably including submarine cable systems. The company was founded in 1953.