The marketing concept rests on four pillars: target market, customer needs, integrated
marketing and profitability. The selling concept takes an inside-out perspective. It starts
with the factory, focuses on the existing products, and calls for heavy selling and
promoting to produce profitable sales. The marketing concept takes an outside-in
perspective. It starts with a well-defined market, focuses on customer needs, coordinates
all the activities that will affect customers, and produces profits by satisfying customers.