What the Oxford English Dictionary Doesn't Tell You About marketing 7p process

https://www.scribd.com/document/413925182/20-Reasons-You-Need-to-Stop-Stressing-About-clickfunnels-pricing-chart

The purchase funnel, or buying funnel, is a buyer centered advertising design which illustrates the theoretical shopper journey in direction of the purchase of a goods and services. In 1898, E. St. Elmo Lewis