Sales is the team whose job it is to “sell what’s in stock”. The company has specific products or services and—and it's up to Sales to sell those things. Sales develops relationships with customers and/or channel partners. They knock down the doors, overcome objections, negotiate prices and terms and often work internally to be sure their customer’s orders are filled. The perspective of Sales is from inside the company out toward the customers and their horizon is focused on this week, this month, and this quarter. If sales is not focused on the now, then there may not be any revenue this week, month, or quarter.