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Dentsu Group Inc. operates in the advertising business in Japan and internationally. The company offers advertising services, including newspapers, magazines, radio, television, internet, sales promotions, movies, out-of-home, public transportation, and other services. It also provides event marketing, creative, marketing, public relation, contents, and other services; and sells software and develops systems, as well as offers outsourcing/operation/maintenance services. In addition, the company rents office buildings; and buys and sells real estate properties, as well as offers building maintenance and fiduciary services. Dentsu Group Inc. was founded in 1901 and is headquartered in Tokyo, Japan.