Agency holding company Dentsu has acquired digital marketing firm Leapfrog Online. The financial terms of the deal weren't disclosed, but Leapfrog achieved $30 million to $40 million in revenue in 2016, according to a Wall Street Journal report. Leapfrog will be absorbed into performance marketing shop iProspect, which is part of the holding company’s network outside of Japan. The report said that Leapfrog offers iProspect access to clients that it doesn't have, enabling it to tailor ads based on what it knows about consumers' searches and browsing.