They use their massive scale to negotiate extended payment terms with suppliers while selling inventory to customers almost instantly.

To understand cash flow, it is helpful to look past the spreadsheets and view it as a company's "heartbeat". While profit tells you if a business is winning, cash flow tells you if it can survive. The "Walmart Strategy": Winning with Negative Cycles

Long-term moves, like buying a new delivery van or selling a piece of land.

If you earn $10,000 in revenue but have $5,000 in expenses, you have $5,000 in profit.