The structure of international cricket has evolve only recently from a traditional ad hoc basis. It had long been traditional for the countries, without any interference from a body such as the International Cricket Council (ICC), to organize for themselves the various cricket matches. Recently, however, the ICC has committed the Test cricket playing nations to play each other in a programme of matches over a period of 10 years. This was set up to encourage some of the better established countries to play the lesser nations more frequently.