What is simple & core marketing system ?

What is simple and core marketing system also differentiate it?

The marketing concept aims not at finding right customers for your product but rather aims at finding right products for your customers. The whole outlook of marketing is customer-oriented. Core marketing concepts being an extension of the former are based upon focusing upon customer needs and wants, segmenting the markets, finding the right target markets and positioning your product according to the selected target market and finally satisfying the customers by offering them value.