Reston, Va. - comScore, a provider of Internet audience measurement services, said on Monday that it has launched a new unit in Japan, called comScore Japan KK, and named industry veteran Maru Sato as its managing director. Sato most recently served as the managing director of Expedia Holdings KK, and previously worked as the managing director of Abacus Japan KK, Jupiter Media Metrix KK and AOL Japan KK.