Steve Ballmer is an American businessman best known for being the CEO of Microsoft from 2000 to 2014. He joined the company in 1980 as its first business manager and played a significant role in its growth, helping to develop products like Windows and Office. Under his leadership, Microsoft expanded its market presence and revenue. After leaving Microsoft, Ballmer purchased the Los Angeles Clippers, a professional basketball team in the NBA, in 2014. He is known for his energetic personality and passionate speeches, which have made him a memorable figure in the tech industry and sports world alike.