Adhocracy is a flexible, adaptable and informal form of organization that is defined by a lack of formal structure. It operates in an opposite fashion to a bureaucracy. The term was first coined by Warren Bennis in his 1968 book The Temporary Society, later popularized in 1970 by Alvin Toffler in Future Shock, and has since become often used in the theory of management of organizations (particularly online organizations). The concept has been further developed by academics such as Henry Mintzberg.