Carta Holdings, Inc., a Tokyo-based company established in 1996, specializes in providing online advertising services to both Japanese and international markets. Operating as a subsidiary of Dentsu Group Inc., its business activities are structured across three main segments: Partner Sales, Ad Platform, and Consumer. The Partner Sales division focuses on offering advertising inventory and comprehensive solutions through various media communication avenues. The Ad Platform segment manages a suite of key services and platforms, including fluct, which provides media support, as well as PORTO, TELECY, and Zucks, an operational advertising platform. Lastly, the Consumer Business segment is responsible for proprietary media properties such as EC Navi and PeX, in addition to delivering human resources and e-commerce related services. This segment also extends its operations to the publication of smartphone games.