Critical Mass Analysis and the Linkage between Marketing and Sales
Often the two departments, marketing and sales are grouped into one in some companies. However, this need not be so, because while Marketing is geared towards creating market-wide awareness of the product(s) sales leverages the awareness to a buyer of the Product Markets and induces buying of the product(s). The process of targeting a buyer from the community of buyers is a case of Selection Mapping (Mathematically speaking sort of)

The "Selection Mapping" of target buyers from amongst the buyer community is in fact product-lifecycle stage specific. The construction of the Selection Mapping, SM, for a company in the venture startup stage is quite different from the construct for a company in the growth stage and the same for a company in the commodity stage.  In that regard then the starting point is the determination of the stage of the company in its product defined lifespan. The first step in ascertaining the stage of the company is the determination of whether or not the company has attained Critical Mass following the method presented in the contents of the title, and then deciding on the construct.

In general for companies in the Execution Phase the construct is Telemarketing, for companies in the Penetration Phase the construct is Relationship and Referral Marketing, and for companies in the growth stage the construct is Attraction Marketing as with Tradeshow attendees.