What is a business intelligence consultant?

What is a computer consultant? 

A computer consultant is a person who works on behalf of a company. Unlike a "typical" job, the consultant is not an employee of the company for which he works. Either the consultant has created his own company, or he is an employee of a company that is usually called a service provider . In both cases, the company for which the consultant works is called " the customer " in the common language of the trade. The following picture summarizes the situation.

Why do businesses use computer consultants? 

In a company, a job can be done by an employee of it or by an external person, a consultant . There is then a choice to be made for the firm that uses consultants for the following reasons:

The IT systems of medium and large companies are complex. The setting up and maintenance of these systems requires the intervention of specialized or experienced people accustomed to dealing with pointed problems;
A consultant brings a new look at the company he does not know. It provides new ideas that it implements when the customer deems it appropriate;
The call to a consultant provides flexibility to businesses. A consultant costs more than an employee but it brings a specific expertise and the company can easily separate if it does not provide satisfaction.

In summary, a consultant offers businesses a level of expertise, freshness, and flexibility.

Source: IT Business Consultant