What is the difference between the sales concept and the marketing concept?

The sales concept achieves its goals by emphasizing integrated marketing; the marketing concept achieves its goals by emphasizing selling and promoting.

The sales concept emphasizes increasing sales by improving the selling process; the marketing concept emphasizes increasing sales by trying harder to meet customer needs.

The sales concept creates profit through customer satisfaction; the marketing concept creates profit through sales volume.

The sales concept focuses on consumer needs; the marketing concept focuses on existing products.