According to literature, one of the first consultants in the world is Arthur D. Little who established his business in 1886 in Cambridge, Massachusetts. He initially gave technical support or helped with engineering to his clients. At the beginning of the 20th century, Booz Allen Hamilton started a similar business. starting from that time, many other companies emerged including Thailand management consulting.
Following that event, James Kinsey – a professor from Chicago University – established an accounting and engineering advisors’ company which used different approach and framework. This corporation did not employ regular engineers, instead, it chose experienced executives that have been trained with a set of analysis and knowledge that are considered temporary at that time.