With over 15,000 employees, KDDI offers fixed-line phone communication, mobile phone and web services, and Internet services. It also has ownership stakes in two Japanese cable television companies. KDDI's mobile phone and web arm is branded as "au" and is the No. 2 player in Japan's mobile communications market. Additionally, KDDI provides data centers, networks, content delivery, system integration, and more globally, with over 40 colocation sites in 23 cities across 12 countries/territories. KDDI is a leader in constructing submarine optical cable, particularly in the Asia Pacific region.