Stage 4 – Revenue is where you monetize what you’re doing. You’re now focused on maximizing the revenue streams rather than on anything else. The goal in this stage is to transition from proving your solution works to proving you can make money in a scalable, self-sustaining way. You’re not just building a product in this stage, you’re building a company.
Revenue per customer minus the cost of acquiring that customer is the key metric for this stage. You also start focusing on the ratio of money poured in to the business against the money which comes out. You try to decide whether you need to optimize revenue per customer, your number of customers, your operational efficiencies, the frequency of purchase or something else. You also look at cash-flow and track when you pass breakeven point and become self-sustaining.