What are the categories of consulting companies? What are the top five consulting companies in the world?

First of all, there is no very accurate definition of the industry classification of consulting companies, which can generally be based on GICS, that is, "global industry classification standard". However, some large companies (not spin-offs) also have corresponding consulting service companies, such as ge and IBM. Also, there is something wrong with the global ranking you want to know, that is, what is the standard of assets or profits? Hehe, this problem is also the main problem of economic research. In short, the following is my personal ranking of consulting service companies. You can ask me again if you want to know more. Accenture's companies in the United States, or Bermuda, mainly provide it services, which is basically the first at present. The operating profit in 2007 exceeded $2 billion. Adp, an American automatic data processing company, is also very good. First Information Group Company, which is also CSC of the United States, an American computer science company. Hehe, this name is both familiar and unfamiliar to most people. Mainly provide it services to Tata and Infosys, two Indian companies, hehe. As for the old American company: EDs, hehe, the river is going downhill. What is your information consultant? Is it human resources? Hehe, that is to say, what is the management? Our country's cognition and understanding of information service is not in place. It is generally understood this way. Do you know adecco in Switzerland, but I heard that there are financial problems recently. As for McKinsey, Kearney, Boston, Bain, etc. The human resources of Manpower USA and Renshida Netherlands are also good. But there are many such companies in Europe, all of which are national. Again, the classification and strength ranking methods are not unified, which can only give you personality. Hehe, work hard by yourself. In my eyes, the ideal consulting company can help many people and make society progress, not just make money.