IDEO is the world's largest and most successful design and development firm. Its client list is an A-Z of leading international corporations, from Amtrak, BMW and Canon to Nike, Pepsi and Samsung. The company was formed in 1991 and its principals, David Kelley, Bill Moggridge and Mike Nuttall, are design pioneers of California's Silicon Valley, riding the wave of high-tech innovation in the region. A multi-disciplinary organization with more than 350 staff worldwide, IDEO has a distinctive design methodology and a renowned culture and process of innovation, which has resulted in an unrivalled track record in developing the products of tomorrow. The original 2001 edition was the first in-depth study of IDEO's working methods and design output, and this new edition brings the story up to date, looking at the company's most recent work, such as that for Prada.