Why most of companies are going hire sales persons on third party contract?

Sales outsourcing is a way for companies to attract increased, high volumes of sales for their products or services by using a third party. The company typically uses outsourcing companies to improve sales volumes without links to the sales teams that carry out those campaigns. The company that undertakes the outsourcing normally will be paid based on the results that they are able to generate and therefore creates a mutually beneficial situation for both Client and outsource.