KDDI is a diversified telecommunication operator formed by the merger of DDI, KDD and IDO in 2000, and is the only domestic company that provides both mobile communication service and broadband service. The number of subscribers to the mobile phone services under the au and TuKa brands is over 21 million, and fixed-line subscribers (MyLine) is approximately 9 million. The 73 KDDI group companies had approximately 13,000 staffs and sales in FY2004/3 was 2,846.1 billion yen. At KDDI, aggressive improvement of communication environment in preparation for the coming ubiquitous network society is underway and KDDI is aiming to become a "ubiquitous solution company" which provides high value-added solutions. 
