LY Corporation

Dominant Japanese internet platform operator controlling the country's leading search engine (Yahoo Japan), messaging app (LINE), and integrated digital ad network

LY Corporation is a Japanese internet conglomerate formed on October 1, 2023, through the merger of Z Holdings, LINE Corporation, Z Entertainment, and Z Data. The company serves as the parent entity for Yahoo Japan, LINE (Japan's dominant messaging platform with over 95 million monthly active users), and numerous other digital properties spanning e-commerce, fintech, news, search, and entertainment. It is one of the largest internet companies in Asia by user reach within Japan. In the AdTech ecosystem, LY Corporation holds a uniquely powerful position in Japan, operating one of the country's most comprehensive digital advertising platforms. Yahoo Japan's display and search advertising, combined with LINE's messaging-native ad formats (LINE Ads, LINE Official Accounts, sponsored content), give the company unparalleled first-party data access across search intent, social behavior, e-commerce, and messaging. This integrated data stack enables highly targeted advertising solutions for both large enterprises and SMBs across Japan. LY Corporation is approximately 64% owned by A Holdings Corporation, a 50/50 joint venture between SoftBank and South Korea's Naver Corporation. The company is publicly traded on the Tokyo Stock Exchange. Its scale, first-party data depth, and dominance across multiple high-engagement platforms make it a critical partner for any brand seeking reach in the Japanese digital market, effectively functioning as Japan's answer to a combined Google-Meta advertising ecosystem.