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Dentsu is a global advertising and marketing company that helps big brands plan, buy, and create ads and content across the world.
Dentsu is one of the world's largest advertising and marketing groups. When a big brand needs to convince people to buy its products, Dentsu is the kind of company it calls: to plan campaigns, buy space on TV and the internet, run public relations, and produce the content — the videos, posts, and stories — that fill that space. It works for clients across Japan, the Americas, Europe, the Middle East and Africa, and Asia Pacific.
The business has two big engines. One is its Japanese operations, where Dentsu is a dominant force and handles a huge share of advertising in its home market. The other is its international network, which houses agencies that serve global clients. The split matters because Japan has traditionally been the steady, high-margin heart of the company, while the overseas business is larger in scale but runs on thinner margins and was built largely through acquisitions. Its main rivals are the other global agency holding companies, like Omnicom, Publicis, and WPP. Here is what Dentsu actually sells. Brands pay it to figure out where to spend their ad budgets — a job that has become far more complicated as people moved from TV to phones and streaming. Dentsu also buys ad space in bulk and resells it, earning a cut, and its creative agencies make the ads themselves. Clients choose a big group like Dentsu because it can handle everything in one place across many countries, rather than hiring dozens of separate shops.
The business has had a rough stretch. Dentsu spent heavily buying agencies around the world, then had to write down their value when growth disappointed, and it has been restructuring its overseas operations to cut costs and simplify. Advertising is also a cyclical business: when the economy slows, companies trim their marketing budgets, and Dentsu feels it. The company still generates solid cash, which it uses partly to pay dividends and buy back shares, but its challenge is clear — making its sprawling international network grow profitably again while defending its strong Japanese base.
Saved answer · last researched 15 Nov 2026