There seems to be a never ending argument among marketing and sales professionals as to what really is the difference between marketing and sales functions. More often than not, both business activity terms are used to describe any business activity that is involved in increasing revenues. For small businesses, with limited resources, there often is no practical difference in marketing and sales functions, all revenue generating activities are typically implemented by the same personnel.

As a company grows in revenues and number of personnel, it typically follows a logical business function progression of