Business consists of making things and selling things. Your company might deliver a product or a service, but somebody has to make it and somebody has to sell it. We make promises through sales and keep promises through production and operations.
Classic situation is a salesperson and an engineer meeting a customer to sell a solution to a problem.
So, what about marketing?
In many years of sales and consulting I have never once heard a salesperson say that they had a great website. I have never heard any salesperson say,’ Thank goodness for marketing’.
In fact virtually every salesperson I meet says that the website is terrible and that the marketing collateral is no good.
https://www.gartner.com/en/sales/insights/buyer-enablement
https://www.sandler.com/blog/aligning-sales-marketing-crm-success-four-keys-motivating-sales-team-embrace-system-create-data-driven-accountability/
If you want to get more from Bill, you can find his book here
https://www.amazon.com/Bootstrap-Selling-Sandler-Bill-Morrison
You can also buy it as an Audible book here:
https://www.amazon.com/Bootstrap-Selling-Sandler-Way Audible