Yahoo Japan

Market leader in Japanese digital advertising and internet services

Yahoo Japan, which merged with LINE Corporation in 2021 to form LY Corporation (formerly Z Holdings), is one of Japan's largest internet companies and a dominant player in the Japanese digital advertising market. The company operates Yahoo! JAPAN, the country's most visited portal site, along with comprehensive advertising solutions including display advertising, search advertising, and native advertising platforms. As a joint venture originally established between SoftBank and Yahoo Inc., the company has evolved into an independent entity with deep market penetration in Japan. In the AdTech ecosystem, Yahoo Japan (LY Corporation) operates one of Japan's largest advertising networks and demand-side platforms, serving both brand advertisers and performance marketers. The company's advertising business leverages extensive first-party data from its ecosystem of services including Yahoo! JAPAN search, Yahoo! News, Yahoo! Shopping, and the LINE messaging app (post-merger). This integration provides advertisers with unique access to Japanese consumers across multiple touchpoints. The company's advertising technology stack includes programmatic advertising solutions, data management platforms, and sophisticated targeting capabilities tailored specifically for the Japanese market. With the LINE merger, the combined entity now reaches over 100 million users in Japan, making it an essential platform for any advertiser targeting Japanese consumers.