Sega Corporation (株式会社セガ Kabushiki gaisha Sega?), usually styled as SEGA, is a multinational video game software developer and an arcade software and hardware development company headquartered in Ōta, Tokyo, Japan. Sega previously developed and manufactured its own brand of home video game consoles from 1983 to 2001, but a restructure was announced on January 31, 2001 that ceased continued production of its existing home console, effectively exiting the company from the home console business. While arcade development would continue unchanged, the restructure shifted the focus of the company's home video game software development to consoles developed by various third-party manufacturers.
Sega's head offices, as well as the main office of its domestic division, Sega Corporation (Japan), are located in Ōta, Tokyo, Japan. Sega's European division, Sega Europe Ltd., is headquartered in the Brentford area of London in the United Kingdom. Sega's North American division, Sega of America Inc., is headquartered in San Francisco; having moved there from Redwood City, California in 1999. Sega Australia is headquartered in Sydney, and Sega Publishing Korea is headquartered in Jongno, Seoul, Korea. The company also has smaller offices in France, Germany, the Netherlands, Spain, and Italy.