Principle Expands US Presence With Acquisition of Digital Advertising Agency Eboost Consulting Japan-based Principle's acquisition of Eboost Consulting strengthens both agencies' support for the global expansion of American and Japanese companies with integrated social media, paid media and advanced analytics News provided by Share this article Share this article CARLSBAD, Calif., Aug. 3, 2021 /PRNewswire/ -- Principle America Co., Ltd. (Principle), a subsidiary of Tokyo-based digital marketing agency, Principle Company, announced today that it has acquired Eboost Consulting (Eboost), an award-winning San Diego-based performance marketing agency specializing in Paid Social, Paid Search and Amazon Advertising. (From left to right: Eboost CEO Evan LaGasse, middle: Principle CEO Ken Kusuyama, right: Eboost COO Chris Root)